The correct statement is: "The MAPE for week 3 is greater than 50%."
To calculate the Mean Absolute Percentage Error (MAPE), we need to compute the absolute error and divide it by the actual value.
Then, we take the average of these percentage errors and multiply by 100 to express it as a percentage.
Based on the given table, we can calculate the MAPE for week 3:
Actual = 10
Forecast = 2
Error = |Actual - Forecast| = |10 - 2| = 8
Percentage Error = (|Actual - Forecast| / Actual) * 100 = (8 / 10) * 100 = 80%
Therefore, the MAPE for week 3 is 80%.
Now, let's analyze the given statements:
O The MAPE is between 10% and 20%:
This statement is not correct since the MAPE for week 3 is 80%, which is not within the specified range.
O The MAPE is greater than 50%:
This statement is correct since the MAPE for week 3 is 80%, which is greater than 50%.
O The MAPE is less than 5%:
This statement is not correct since the MAPE for week 3 is 80%, which is not less than 5%.
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anemia for the study of jordanian children in exercise 4, the sample mean hemoglobin level was 11.3 g/dl and the sample standard deviation was 1.6 g/dl. a significance test yields a p-value of 0.0016. (a) interpret the p-value in context. (b) what conclusion would you make if a 0.05? a 0.01? justify your answer.
(a) The interpret the p-value in context of 0.0016 indicates that the probability of obtaining a sample mean hemoglobin level of 11.3 g/dl or lower.
(b) The conclusion would make if a 0.05 is rejected because the p-value (0.0016) is less than the significance level.
If using a significance level of 0.01, the null hypothesis would still be rejected because the p-value is less than 0.01.
Anemia Study Results(a) The p-value of 0.0016 indicates that the probability of obtaining a sample mean hemoglobin level of 11.3 g/dl or lower, assuming that the true population mean is 12 g/dl (or higher), is only 0.0016. This suggests that the observed difference between the sample mean and the hypothesized population mean is statistically significant and unlikely to be due to chance alone.
(b) If using a significance level of 0.05, the null hypothesis (that the true population mean is 12 g/dl or higher) would be rejected because the p-value (0.0016) is less than the significance level. Therefore, it can be concluded that the sample provides evidence that the true population mean hemoglobin level is lower than 12 g/dl.
If using a significance level of 0.01, the null hypothesis would still be rejected because the p-value is less than 0.01. In this case, the evidence is even stronger, and the conclusion that the true population mean is lower than 12 g/dl would be even more robust.
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in which group of numbers is each number a multiple of 4?
12, 24, 48, 96
12, 33, 66, 99
21, 28, 49, 70
25.40, 75, 95
ma7) If Az is an altitude, where is point A located?XRA8) What is the mZZAX?9) Is AZ also a median? Justify your answer.
7)(3,8)
8)90 °
9)AZ is not a median
Explanation
Step 1
An altitude of a triangle is the perpendicular segment from a vertex of a triangle to the opposite side,so
in the graph, we would have
hence, th coordinate A is
\(A=(3,8)\)Step 2
what is angle ZAX
due to the lines AZ and XY are perpendicular, the intersetion of the lines form an 90 ° angle
Step 3
b)Is AZ also a median? Justify your answer.
median is the line segment from a vertex to the midpoint of the opposite side. It is also an angle bisector when the vertex is an angle in an equilateral triangle or the non-congruent angle of an isoceles triangle.
therefore, the altitude is also the median ONLY for ISOSCELES TRIANGLES,
hence
AZ is not a median
I hope this helps you
Translate this sentence into an equation. 144 is the product of Diego's age and 9.
Step-by-step explanation:
Represent Diego's age by d. Then 9d=144.
A diagram of Joe's living room wall with a geometric design is shown. Joe painted the shaded triangle on the living room wall. What is the area in square feet of the shaded triangle that Joe painted?
Answer: the answer is 48
Step-by-step explanation:
Answer: 48
Step-by-step explanation: A triangles formula is base x height divided by 2, therefore we will do first 8 x 12 which equals 96, and divide by 2, giving us 48.
The Trial Urban District Assessment (TUDA) is a government-sponsored study of student achievement in large urban school districts. TUDA gives a reading test scored from 0 to 500. A score of 243 is a “basic” reading level and a score of 281 is “proficient.” Scores for a random sample of 1470 eighth-graders in Atlanta had a mean of 240 with standard deviation of 42.17.
Construct and interpret a 99% confidence interval for the mean reading test score of all Atlanta eighth-graders. Show your calculations and round your interval to three decimal places.
There is a 99% chance that the value may fall between 237.167 and 242.833
What is confidence interval?
Confidence interval shows the range of values for which a random sample might be.
The z score of 99% confidence interval is 2.576. sample = 1470, mean = 240 and standard deviation = 42.17. Hence, margin of error (E) is:
\(E = z_\frac{\alpha }{2}*\frac{standard\ deviation}{\sqrt{sample\ size} } =2.576*\frac{42.17}{\sqrt{1470} } =2.833\)
The confidence interval = mean ± E = 240 ± 2.833 = (237.167, 242.833)
There is a 99% chance that the value may fall between 237.167 and 242.833
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Using the formula for interest, I = Prt, solve for r. Please answer this as soon as possible please and thank you
Answer:
A
Step-by-step explanation:
I = Prt = r * Pt
divide Pt from both side we get
I/(Pt) = r
Answer:
a
Step-by-step explanation:
I = Prt ( isolate r by dividing both sides by Pt )
\(\frac{I}{Pt}\) = r , that is
r = \(\frac{I}{Pt}\) → a
2. 5x2 + 16x - 84 = 0
Helppp please
Answer:
the x would equal 25 as 5x2 is 10 + 16x25 - 84 is 0.
Step-by-step explanation:
Answer:
2.8, –6
Step-by-step explanation:
The equation is already instandard form. Use the quadraticformula.5x2+16x−84=0x=−b±b2−4ac√2aSubstitute 5 for a, 16 for b,and −84 for c. Solve to getx=2. 8 or x=− 6.
If A=68+j16, and B=2−j4, then solve for the quotient A/B.
a. 10−j12 b. 4+j7.45 c. 3.6−j15.2 d. 14.8−j62.3 e. 3.6+j15.2
The quotient A/B is equal to 42 + 84j, which corresponds to option b: 4 + j7.45.
To find the quotient A/B, we can perform complex division. Let's proceed with the calculation:
A/B = (68 + j16) / (2 - j4)
To simplify the expression, we can multiply the numerator and denominator by the conjugate of the denominator:
A/B = ((68 + j16) * (2 + j4)) / ((2 - j4) * (2 + j4))
Expanding the numerator and denominator:
A/B = ((68 * 2) + (68 * j4) + (j16 * 2) + (j16 * j4)) / ((2 * 2) + (2 * j4) - (j4 * 2) - (j4 * j4))
= (136 + j272 + j32 + j64) / (4 + j8 - j8 - j16)
= (136 + j272 + j32 + j64) / 4
Simplifying further:
A/B = (136 + j272 + j32 + j64) / 4
= (136 + j272 + j32 + j64) / 4
= (136 + 32) / 4 + (272 + 64) / 4j
= 168 / 4 + 336 / 4j
= 42 + 84j
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What is the meaning of SSS similarity theorem?
The SSS Similarity Theorem states that if three sides of one triangle are equal to three sides of another triangle, then the triangles are similar. This theorem is also known as the Side-Side-Side Similarity Theorem or the SSS Similarity Postulate.
What is the similarity theorem of triangles?
Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent. Triangle similarity is indicated here by the symbol (~).
SSS or Side-Side-Side Similarity.
If all three sides of a triangle are in proportion to the three sides of another triangle, then the two triangles are similar.
Thus, if AB/XY = BC/YZ = AC/XZ then ΔABC ~ΔXYZ.
From this result, we can conclude that-
∠A = ∠X, ∠B = ∠Y and ∠C = ∠Z
Hence, we have described the SSS similarity theorem.
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Which is not a discrete random variable?
A. The number of births in a hospital on a given day
B. The number of fives obtained in four rolls of die
C. The hourly earnings of a call center employee in Boston
D. The number of applicants applying for a civil service job
Hourly earnings of call center employees is not a discrete random variable.
The answer is C.
The continuous random variable is not a discrete random variable. Continuous random variables are variables that can take an infinite range of values within a specific range, such as time, length, and weight.
A discrete random variable is a random variable that can only take certain discrete values. A discrete random variable is defined as a variable that takes on a specific set of values or a range of values.
The number of births, number of fives, and number of applicants are all random variables that can only take certain discrete values within a particular range of possible values.
So, the answer is C. The hourly earnings of a call center employee in Boston is not a discrete random variable.
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Choose the correct answer.
-
Let f(x) = x - 4 and g(x) = x2. Find (gof)(-3).
A.1
B.12
C.49
D.-7
7.
Write the equation of the piecewise function ƒ that is represented by its graph.
A.) \(f(x)=\left \{{{x^{3}, if x\ \textless \ 1} \atop {x, if x \geq 1}} \right.\)
B.) \(f(x)=\left \{{{x^{3}, if x\ \textless \ 0} \atop {x^{2}, if x\geq 0}} \right.\)
C.) \(f(x)=\left \{{{x^{3}, if x\ \textless \ 0} \atop {x, if x\geq 0}} \right.\)
D.) \(f(x)=\left \{{{x, if x\ \textless \ 0} \atop {x^{3}, if x\geq 0}} \right.\)
The piecewise function that represent the graph is A)f(x)=\(\left \{{ x^3 ,if{x < 1} \atop x,if {x\ge1}} \right.\).
What is function?A mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable). In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.
In considering the definition of any piecewise function, the domain descriptions in the function definition must match the pieces shown in the graph.
Here, the right segment has no upper bound, so x > 1 is an appropriate description of its domain.
The left segment also has no upper bound , so x\(\ge\) 1is an appropriate description of its domain.
The one answer choice that combines these domain descriptions is
A)f(x)=\(\left \{{ x^3 ,if{x < 1} \atop x,if {x\ge1}} \right.\)
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10 POINTS PLEASE HELP ASAP!!! What is the length of the altitude of the equilateral triangle below?
Step-by-step explanation:
Hey there!
Looking on figure we find that triangle ABC is a Right angled triangle.
Taking reference angle as C, we get;
Perpendicular (p) = a
Base(b) = 5
And hypotenuse (h)= 10
Now;
Using Pythagoras relation, we get;
\(p = \sqrt{ {h}^{2} - {b}^{2} } \)
Put all values.
\(a = \sqrt{ {10}^{2} - {5}^{2} } \)
\(a = \sqrt{100 - 25} \)
\(a = \sqrt{75} \)
\(a = 5 \sqrt{3} \)
Therefore, answer is Option E.
Hope it helps..
A recipe for 48 chocolate chip cookies calls for 3 cups of flour. The number of cookies varies directly with the amount of flour you use.
Answer:
answer is 114 I have confirmed it
Which determines the fewest number of operations required for a given n.
a. worst-case analysis
b. average-case analysis
c. best-case analysis
d. usual-case analysis
Best-case analysis refers to finding the scenario in which an algorithm performs most efficiently, requiring the fewest number of operations.(option c)
This analysis is useful for understanding the lower bound or the best-case time complexity of an algorithm. In contrast, worst-case analysis considers the scenario where the algorithm performs least efficiently and requires the maximum number of operations.
Average-case analysis takes into account the expected or average input and calculates the average number of operations. Usual-case analysis is not a commonly used term in computer science and may not be as relevant in this context. Therefore, best-case analysis is the term that specifically addresses the fewest number of operations required for a given n.
The term that determines the fewest number of operations required for a given n is the best-case analysis. It focuses on the best possible input that the algorithm can encounter.
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students at a university fill out a survey describing their personal computers. some of the variables are responses to the following questions. which of these variables is categorical?
One of the variables that is categorical in the survey is the type of operating system used by the students.
This variable categorizes the students' responses into different categories based on the type of operating system they have on their personal computers.
Categorical variables are qualitative and represent characteristics or attributes that cannot be measured numerically.
In this case, the categories for the operating system variable might include options such as Windows, Mac, Linux, or Other.
Other variables in the survey may include numerical or quantitative data, such as the amount of RAM or the storage capacity of the students' computers.
These variables can be measured and expressed numerically.
However, since you asked for a variable that is categorical, the type of operating system is the relevant variable in this case.
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A painter charges 15.40 per hour, plus an additional for the supplies. If he made 188.73 on a job where he worked 7 hours, how much did the supplies cost
Answer:
80.93
Step-by-step explanation:
15.40×7=107.80
188.73-107.80=80.93
Find the missing number to make these fractions equal.
3/4 = blank/8
Answer:
6/8
Step-by-step explanation:
You can multiply the denominator of 4 by two to get 8. But you need to do the same to the numerator, which gives you 6.
Answer:
6/8
Step-by-step explanation:
you multiply both numbers by 2
list the following numbers from least to greatest:
-64, 3.5, sqrt27, 6,666...
Answer:
-64, 3.5, 27, 6,666
Step-by-step explanation:
give brainliest i need it to level up
Eydin has two strips if stickers,A and B, of the same length.The length of each sticker is 1.2 cm. The stickers in each strip form a repeated patteren as shown below
There are 56 heart stickers all together in both strips of stickers.What is the length of each strip of stickers?
Answer:
Each strip is 117.6 cm
Step-by-step explanation:
I created a proportion of hearts to others. On strip A there is 1 heart to 2 others and B there is 1 heart to 3 others. I added them and got a proportion of 2 hearts to 5 others for both. With a total of 56 hearts, I set up a proportion to determine the total stickers
2/5=56/x
When I cross multiply, I get 2x=280 and x=140
so for the 56 total hearts, I have 140 others. I added those to get the total stickers and got 196. I multiplied that by 1.2cm and got 235.2 cm for both. Since both are the same size, just divide that by 2 and get 117.6 cm each.
please help asap will mark brainliest for correct awnser
Answer:
Option 3
Step-by-step explanation:
buses to ayton leave the station every 25 mins, buses to bleeford leave the station every 40 mins, buses at both places leave at 9am. what is the next time buses to ayton and bleeford leave the station together??
Answer:12:20
Step-by-step explanation:
40*5=200min
25*8
3hr and 20 min
Will give crown helo
Answer:
\(-\frac{3}{5}\)
Step-by-step explanation:
Your points on this line are:
(4, -1) and (-1, 2)
To find slope we will use the slope formula.
\(\frac{y2-y1}{x2-x1}\)
Substitute:
\(\frac{2+1}{-1-4}\)
\(\frac{3}{-5}\)
This means the slope is
\(-\frac{3}{5}\)
hamood spelled backwards is hamood also let me know if u want my account by 12 AM PDT 6/2/21
Answer:
yo congratulations on finishing 10th grade (congratulate me on finishing 8th)
hamood spelled backwards is doomah so...um...
also do u mean 7/2/21..bc 6/2/21 is like in June and we're in July
Please answer this question
Answer: 480
Step-by-step explanation:
In a bag of M&MS there are 4 green, 6 yellow and 8 blue candies. What is the probability of drawing a blue then a green if you replace the candy after the draw?
Answer:
8/81
Step-by-step explanation:
8/18 x 4/18 = 32/324 = 8/81
The probability of drawing a blue and then a green and replacing the candy after the draw is 8/81.
What is probability?Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Probability = Number of favorable outcomes / Number of sample
It is given that in a bag of M&MS there are 4 green, 6 yellow, and 8 blue candies.
The probability for blue = 8/18
The probability for green = 4/18
The probabilities of drawing a blue then green if you replace the candy after the draw will be calculated as below:-
Probability = 8/18 x 4/18
Probability = 32/324
Divide the number 32 by 324 to get the probability.
Probability = 8/81
Therefore, the probability of drawing a blue and then a green and replacing the candy after the draw is 8/81.
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how many pairs of parallel sides does a rhombus have
A rhombus has two pairs of parallel sides.
A rhombus is a quadrilateral with four sides of equal length. A rhombus's opposite sides are parallel to one another. It has 2 diagonals that bisect each other at a 90-degree angle. In a rhombus, all sides are the same length. The opposite angles are congruent, but the adjacent angles are not. The adjacent angles have a sum of 180 degrees, as with all quadrilaterals.
A rhombus is a special type of parallelogram. A parallelogram is a four-sided figure with two pairs of parallel sides. A rhombus has two pairs of parallel sides because it is a type of parallelogram. However, all sides of a rhombus are of the same length. Furthermore, a rhombus's opposite angles are equal. This implies that if the diagonal of the rhombus bisects each other at a 90-degree angle, the diagonals are perpendicular.
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what might be some effective strategies to prevent the various misuses of evaluations?
Evaluations, which refer to the process of assessing or measuring the performance, achievement, or quality of a person, program, or organization, can be misused in various ways, such as being biased, inaccurate, or misinterpreted. Here are some effective strategies to prevent the various misuses of evaluations:
Develop clear evaluation criteria: Develop clear, objective, and relevant criteria for evaluating the performance, achievement, or quality of the person, program, or organization being evaluated. This can help ensure that the evaluation is fair, valid, and reliable.
Train evaluators: Train evaluators on how to use the evaluation criteria effectively, avoid biases, and ensure accuracy and reliability in the evaluation process. This can help prevent the misuses of evaluations due to evaluator error.
Use multiple sources of data: Use multiple sources of data to evaluate performance, achievement, or quality, such as feedback from multiple evaluators, self-assessment, and objective measures of performance. This can help ensure that the evaluation is comprehensive and well-rounded, and can help prevent the misuses of evaluations due to relying on a single source of data.
Use evaluations for improvement and learning: Use evaluations as a tool for improvement and learning, rather than solely for making decisions about rewards, punishments, or status. This can help prevent the misuses of evaluations due to the pressure to achieve high scores or rankings.
Foster a culture of trust and openness: Foster a culture of trust and openness in which feedback and evaluations are seen as opportunities for growth, rather than as threats or sources of judgment. This can help prevent the misuses of evaluations due to fear or defensiveness.
Overall, preventing the various misuses of evaluations requires careful planning, training, and implementation, as well as a commitment to fairness, accuracy, and improvement.
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Answer the question True or False. Statistics involves two different processes, describing sets of data and drawing conclusions about the sets of data on the basis of sampling. Seleccione una: O A Tru
According to the information we can infer that is true that statistics involves two different processes.
How to prove that statistics involves two processes?To prove that statistics involves two different processes, we have to consider the processes that it involves. The first process that it involves is describing sets of data, incluiding organizing, summarizing, and analyzing the data.
On the other hand, the second process that statistics involves is drawing conclusions about the sets of data on the basis of sampling. This process is to make inferences and draw conclusions about the larger population from which the sample was taken.
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