Someone help me please

Where the above conditions are given then the correct answer is  -Yes, because the test value –3.90 is outside the noncritical region (Option C)

To determine if the hamburgers from the two chains have a different number of calories, we can conduct an independent t-test.

Given  -

Chain A -

- Sample size (n1) = 5

- Sample mean (x1) = 230 Cal

- Sample standard deviation (s1) = 23 Cal

Chain B  -

- Sample size (n2) = 9

- Sample mean (x2) = 285 Cal

- Sample standard deviation (s2) = 29 Cal

The null hypothesis (H0) is that the two chains have the same number of calories, and the alternative hypothesis (Ha) is that they have a different number of calories.

Using an independent t-test, we calculate the test statistic  -

t = (x1 - x2) / √((s1² / n1) + (s2² / n2))

Plugging in the values  -

t = (230 - 285) / √((23² / 5) + (29² / 9))

t ≈ -3.90

To determine the critical region, we need to compare the test statistic to the critical value at a significance level of α = 0.05 with degrees of freedom df = smaller of (n1 - 1) or (n2 - 1).

The degrees of freedom in this case would be df = min(4, 8) = 4.

Looking up the critical value for a two-tailed t-test with df = 4 at α = 0.05, we find that it is approximately ±2.776.

Since the test statistic (-3.90) is outside the critical region (±2.776), we reject the null hypothesis.

Therefore, the reporter can conclude, at α = 0.05, that the hamburgers from the two chains have a different number of calories.

This means that the correct answer is  -" Yes, because the test value –3.90 is outside the noncritical region" (Option C)

Learn more about t-test at:

https://brainly.com/question/6589776

#SPJ4

Full Question:

Although part of your question is missing, you might be referring to this full question:

A reporter bought hamburgers at randomly selected stores of two different restaurant chains, and had the number of Calories in each hamburger measured. Can the reporter conclude, at α = 0.05, that the hamburgers from the two chains have a different number of Calories? Use an independent t-test. df = smaller of n1 - 1 or n2 - 1.

Chain A Chain B

Sample Size 5 9

Sample Mean 230 Cal 285 Cal

Sample SD 23 Cal 29 Cal

A) No, because the test value –0.28 is inside the noncritical region.

B) Yes, because the test value –0.28 is inside the noncritical region

C) Yes, because the test value –3.90 is outside the noncritical region

D) No, because the test value –1.26 is inside the noncritical region

Complement of set A is the set of all elements in the universal set that are not in the set .

If there is a subset of the universal set (U) called A, then the complement of set A, denoted by the symbol A', is different from the elements of set A and contains the elements of the universal set but not the elements of set A.

In this case, A' = x U: x A.

In other words, the complement of a set A is the difference between the universal set and set A.

For example: U = {1, 2, 3, 5, 7, 9, 15 ,14, 13}, A = {1, 2, 3, 5,7,9}, find the complement of A.

A' = U - A = {1, 2, 3, 5, 7, 9, 15,14,13} - {1, 2, 3, 5,7,9} = {15,14, 13}

A set that contains items from all related sets, without any repetition of elements, is known as a universal set (often symbolised by the letter U). If A and B are two sets, for example, A = 1, 2, 3 and B = 1, a, b, c, then U = 1, 2, 3, a, b, c is the universal set that these two sets belong to.

know more about universal set click here

https://brainly.com/question/8053622

#SPJ4

Answer:

Your answer is 196000000

Step-by-step explanation:

The product of 3500 and 5.6 x 10⁴ in scientific notation will be;

⇒ 19.6 × 10⁷

What is Multiplication?

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The expression is,

⇒ 3500 × 5.6 × 10⁴

Now,

Since, The expression is,

⇒ 3500 × 5.6 × 10⁴

After multiply, we get;

⇒ 19,600 × 10⁴

⇒ 19.6 × 10³ × 10⁴

⇒ 19.6 × 10⁷

Thus, The product of 3500 and 5.6 x 10⁴ in scientific notation = 19.6 × 10⁷

Learn more about the multiplication visit:

https://brainly.com/question/28768606

#SPJ5

In the given parallelogram vwxy: x = 3; m∠Y = 65° and ∠YVX = 61° by (alternate interior angle).

A quadrilateral with the opposing sides parallel is called a parallelogram (and thus opposite angles equal).

In the given parallelogram vwxy:

Parallel sides are equal.

So, 2x = 6

x = 6/2 = 3

Opposite pair of angles are also equal.

So,

∠W = ∠Y = 65°

Now,

∠YVX = 61° (alternate interior angle).

Know more about the parallelogram

https://brainly.com/question/970600

#SPJ1

Answer:

28 - 8= 20 ÷ 5 = 4

Step-by-step explanation:

Use distributive property. The answer is 4

Answer:

5(4) + 8 = 28

Step-by-step explanation:

X is 4 hope this helps

Answer:

a) 25830

b)9975

Step-by-step explanation:

a) 287

x 90

25830

b) 105

x 95

9975

Answer: just plug these into a calculator to find the simplified answers

Answer:

2+6≤120

2x+6y≤120

Step-by-step explanation:

The correct equation for comparing the alternatives with a salvage value of $7,000 after 4 years and a MARR of 12% per year is b. PWX = -20,000 - 9000(P/A,12%,4) + 5000(P/F,12%,2) - 15000(P/F,12%,2).

The correct equation for the present worth (PW) when comparing the alternatives with a salvage value of $7,000 after 4 years and a MARR of 12% per year is:

b. PWX = -20,000 - 9000(P/A,12%,4) + 5000(P/F,12%,2) - 15000(P/F,12%,2)

This equation takes into account the initial cost of -$20,000, the cash inflow of $9,000 per year for 4 years (P/A,12%,4), the salvage value of $5,000 at the end of year 2 (P/F,12%,2), and the salvage value of $15,000 at the end of year 4 (P/F,12%,4).

Therefore, the correct option is b. PWX = -20,000 - 9000(P/A,12%,4) + 5000(P/F,12%,2) - 15000(P/F,12%,2).

To learn more about equations visit : https://brainly.com/question/29174899

#SPJ11

The given equation is a combined variation.

We have been given an equation is

\(\frac{xy}{z}\)

This is an equation in which we have three variables and one constant.

This can not be the case of direct or inverse variation because in direct or inverse variation we have only two variables. Whereas, here we have three variables.

So, Direct and inverse options are discarded.

So, either It can be joint or combined

In joint variation both the variables are directly proportional

Hence, given equation is not joint because if we rewrite the equation we will get \(y = \frac{cz}{x}\) both the variables are not directly proportional.

In combined, one variable is directly proportional and the other one is inversely proportional.

From \(y = \frac{cz}{x}\)  we can see that z is directly proportional and x is inversely proportional.

Hence the answer is, the given equation is combined variation.

To learn more about variations click here https://brainly.com/question/2375770

#SPJ9

Therefore , the solution of the given problem of expressions comes out to be 24 represents the number of pencils in each pack.

Estimates should be generated using growing, equation, and blocking moving numbers rather than at random. They could only help one another by sharing resources, information, or solutions to issues. A statement of variable may also include formulas, pieces, and notations in addition to numerical calculations like addition, negate, synthesis, and combination. Evaluation and analysis are possible for both sentences and words.

Here,

The algebraic expression can be used to calculate the quantity of pencils the store has available for sale

if it has "n" packs of scented pencils, each having 24 pencils:

=> 24n

where n is the number of packs available, and 24 represents the number of pencils in each pack.

To know more about expressions visit :-

brainly.com/question/14083225

#SPJ1

If f(x, y) = f(x) · f(y) for all (x, y) such that f(x, y) > 0, then X and Y are not independent i.e. x ⊥⊥ y is false.

The given statement, "If f(x, y) = f(x) · f(y) for all (x, y) such that f(x, y) > 0, then x ⊥⊥ y" is false. What is the independence concept?

The independence concept is an important concept in probability theory. Independence is a mathematical concept that refers to a situation where knowledge of one event has no effect on the likelihood of another event. The independence concept is a key property of many probability distributions in statistics.

Two variables X and Y are said to be independent if the knowledge of one variable doesn't affect the distribution of the other variable, i.e. P(X|Y) = P(X).Given Definition:

By definition, x ⊥⊥ y iff f(x, y) = f(x) · f(y) for all (x, y).

Now we will check the statement's validity.

That is, If f(x, y) = f(x) · f(y) for all (x, y) such that f(x, y) > 0, then x ⊥⊥ y. This statement is false.

Let's check why?

Assume that X and Y are not independent i.e. P(X, Y) ≠ P(X)P(Y).

Then f(x, y) = P(X = x, Y = y) ≠ P(X = x)P(Y = y) = f(x) · f(y).

Therefore, f(x, y) = f(x) · f(y) is only true when X and Y are independent.

So, we can conclude that If f(x, y) = f(x) · f(y) for all (x, y) such that f(x, y) > 0, then X and Y are not independent i.e. x ⊥⊥ y is false.

Learn more about probability theory from the given link!

https://brainly.in/question/2045850

#SPJ11

3)  since we don't have the information about the interest paid (I), we cannot determine the rate of interest at this time.

(1) To find the total amount Adrian paid in 36 months, we can multiply the monthly installment by the number of installments:

Total payment A = Monthly installment * Number of installments

              = $375 * 36

              = $13,500

Therefore, Adrian paid a total of $13,500 over the course of 36 months.

(2) In the simple interest formula I = Prt, the letters used represent the following variables:

I: Interest (the amount of interest paid)

P: Principal (the initial amount, or in this case, the car worth)

r: Rate of interest (expressed as a decimal)

t: Time (in years)

(3) To find the rate of interest in percentage, we need more information. The simple interest formula can be rearranged to solve for the rate of interest:

r = (I / Pt) * 100

To know more about Number visit:

brainly.com/question/3589540

#SPJ11

Answer:

no pic

STEP-BY-STEP-EXPLANATION

Answer:

Step-by-step explanation:

That appears to be approximately 45 degrees, so to the nearest 10, I would put that at about a 50 degree angle.

To construct a truth table for the expression `(x+y′)(x′+z′)(y′+z)`, follow the steps given below:

Step 1: Write the given expression, `(x+y′)(x′+z′)(y′+z)`.

Step 2: List out all possible combinations of the given variables in a table. There are three variables x, y and z, so there will be 2³ = 8 combinations. Let's list them as follows: x=0, y=0, z=0 x=0, y=0, z=1 x=0, y=1, z=0 x=0, y=1, z=1 x=1, y=0, z=0 x=1, y=0, z=1 x=1, y=1, z=0 x=1, y=1, z=1

Step 3: Evaluate the expression `(x+y′)(x′+z′)(y′+z)` for each combination of variables, and write the output values in the truth table. To do this, substitute the given variable values in the expression and then simplify to get the output.

Learn more how to construct a truth table in the link given:

https://brainly.com/question/13425324

#SPJ11

Answer:

x = 50 degrees

y = 105 degrees

Step-by-step explanation:

to find y, take 75 and subtract it from 180:

180 - 75 = 105

y = 105 degrees

to find x, take 180 and subtract 75:

180 - 75 = 105

then, subtract 5 from 105:

105 - 5 = 100

next, divide 2 from 100:

100 / 2 = 50

x = 50 degrees

\(\huge\pink{Answer}\)

7/10 and 23/50

Answer:

1. 30%

2.46%

Step-by-step explanation:

The probability of Kayla not drawing a yellow or a green bead is  30 %. The probability of Kayla drawing a red or a green bead is  46 %.

Correct for plato! :)

Using the slope formula, it is found that the value of j is 12.

The slope is the ratio of the vertical changes to the horizontal changes between two points of the line. The equation of the straight line has its slope and given point.

If we have a non-vertical line that passes through any point(x1, y1) has gradient m. then general point (x, y) must satisfy the equation

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given;

A line with a slope of -1/10 passes through the points (-2,6) and (j,5).

Now,

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

-1/10= 5-6/j+2

-1/10= -1/j+2

10=j+2

j=12

Therefore, by the given slope j will be 12.

Learn more about slope here:

https://brainly.com/question/2503591

#SPJ9

The ponderal index cannot be computed without the value of the constant "a" in the formula. Therefore, the ponderal index for a person who is 76 inches tall and weighs 192 pounds cannot be determined.

To compute the ponderal index, we need the formula and the value of the constant "a."

a) The formula for the ponderal index is given as I = a, where I represents the ponderal index and a is a constant. However, the value of the constant "a" is missing in the provided information. Without knowing the value of "a," we cannot compute the ponderal index for a person who is 76 inches tall and weighs 192 pounds.

b) Similarly, without knowing the value of the constant "a," we cannot determine the weight of a man who is 77 inches tall and has a ponderal index of 11.56.

To compute the ponderal index or determine the weight, we need the specific value of the constant "a" in the given formula.

Learn more about index here :-

https://brainly.com/question/32793068

#SPJ11

Answer:

x  <  8

Step-by-step explanation:

First you divide 18 by 3, which gives you 6.

x  −  2  <  6

Then, you add 2 to 6, which gives you 8, which leaves you with :

x  <  8

:)

Answer:

X<8

Step-by-step explanation:

Distribute the 3 to get 3x-6<18. Then add the 6 to 18 leaving 3x<24. Then divide 24 by 3 to leave x by itself. x<8

I hope this helped! :)

Answer:

y = 3 + 1/2 * x

Step-by-step explanation:

Answer:

the last one 5/25

Step-by-step explanation:

Answer:

Determine or clarify the meaning of unknown and multiple-meaning words and phrases by using context clues, analyzing meaningful word parts, and consulting general and specialized reference material

Step-by-step explanation:

Answer:

The Inequality n+8>11

n>3

Step-by-step explanation:

The inequality for the given phrase is n+8>11 and its solution is n∈(-∞,3).

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The given phrase "A number n plus 8 is greater than 11" can be written in the form of inequality as shown below.

Now, the inequality can be solved for the value of n as shown below,

n + 8 > 11

Subtract 8 from both sides of the inequality,

n + 8 - 8 > 11 - 8

n > 3

Hence, the inequality for the given phrase is n+8>11 and its solution is n∈(-∞,3).

Learn more about Inequality here:

https://brainly.com/question/19491153

#SPJ2

Answer:

$30

Step-by-step explanation:

Adding up all the expenditures and the remaining amount

starting amount = expenses + remainder

starting amount = ($5 + $6 + $10 + $4) + ($5)

starting amount = $30

answer

Solved 3a. (10 pts) fa? x2 arctan (3.c) dx = 3b. (10 pts)

Step-by-step explanation:

brainlist me

Answer:1. f(x) is translated 15 units to the left 2. f(x) is vertically stretched

Step-by-step explanation:

I took this class last year

Answer:

f(x) is translated 15 units to the left 2. f(x) is vertically stretched

Step-by-step explanation:

Step-by-step explanation:

2k=3×4

2k=12

2k/2=12/2

k=6

Answer:

k = 6

Step-by-step explanation:

In Ratio Questions , The Denominator takes the same Ratio as the Numerator and vice versa

so for Question , 4 is double 2

Then k must be double of 3

Then k=2*3 = 6