​A research wishes to see if there is a difference in the manual dexterity of athletes and that of band members. Two random samples of 30 are selected from each group and are given a manual dexterity test. The mean of the athlets' test was 87,and the mean of the band members' test was 92. The population standard deviation for the test is 7.2. At a=0.01, is the there a signification difference in the mean score?

To make a table of values for a linear relationship;

Choose a group of x values before creating the table. Add each x value from the left side column to the equation. Evaluate the equation (middle column) to arrive at the y value

Given,

Linear relationship;

A straight-line link between two variables is referred to statistically as a linear relationship (or linear association). Linear relationships can be represented graphically or mathematically as the equation y = mx + b.

Here,

We have to make a table of values for a linear relationship;

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Answer:

Have to pay $15.12 but with the 15% tip, it's $16.56.

Step-by-step explanation:

To find how the amount to pay, you do y=a(b)^x.

In this case, it would be y=14.40(1.05)^1. You get the 1.05 from adding the 5% to 100 then turning it into a decimal (dividing by 100).

To figure out the amount needed to be paid with a 15% tip is the same idea. Give it a try.

Answer:

ambotchat hghxy grey gueter Fri h I really want you

Answer:

\( \sqrt{9 } = 3 \)

Answer:

1.024E11

Step-by-step explanation:

Answer:

The age distribution of a population is shown.

a. The probability that a person chosen at random is at least 15 years old is 14%

b. The probability that a person chosen at random is 25 - 44 years old is 26%

The probability that a person chosen at random is at least 15 years is 80%

The probability that a person chosen at random is 25 - 44 years old is 26%

Probability determines how likely it is that a stated event would occur. This probability lies between 0 and 1.

The probability that a person chosen at random is at least 15 years = sum of percentages of people at least 15 years old : 14 + 13 + 13 + 15 + 12 + 13 = 80%

The probability that a person chosen at random is 25 - 44 years old : 13% + 13% = 26%

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Answer:

3.14

Step-by-step explanation:

Formula: \(b= \sqrt{c^2-a^2}\)

b= \(\sqrt{2.1^2-1.4^2}\)

b = \(\sqrt{2.45}\)

b = 1.57

To get x you need to double b which is

3.14

Answer:

Step-by-step explanation: nmbgbhj ,vmxhvgvkhchvc vhkyfdcxvgch cggcfglfflfvhghghjb

Answer:

\(y = - 2 \times { 5}^{ - ( - 2) - 1} = - 2 \times {5}^{2 - 1} = - 2 \times 5 = - 10\)

Answer:

The answer is -10

Step-by-step explanation:

h(t) = -2 × 5⁻ᵗ⁻¹; h(-2)

h(-2) = -2 × 5⁻(⁻²)⁻¹

h(-2) = -2 × 5¹

h(-2) = -10

Thus, The answer is -10

-TheUnknownScientist 72

Answer:

  B.  2l+2w=108; l =2w-3

Step-by-step explanation:

You want the system of equations that expresses the relationships ...

Letting l and w represent length and width, respectively, the relations are ...

  108 = 2l +2w . . . . . the perimeter is 108 inches

  l = 2w -3 . . . . . . . . the length is 3 less than twice the width

__

Additional comment

The first equation makes use of the perimeter equation for a rectangle:

  P = 2l +2w

Answer:

50 miles per hour good luck!!

Step-by-step explanation:

basically all you have to do is divide 175 by 3 1/2

Answer:

60 degrees

Step-by-step explanation:

1+<2=180

<1+120=180

<1=180-120

<1=60

Answer:

36 left

Step-by-step explanation:

Answer:

560cm

Step-by-step explanation:

Volume = Length × Breadth × Height

= 10 × 8 × 7

= 560 cm³

Answer:

Step-by-step explanation:

Volume =length x breadth x height

10 x 8 x 7=560cm^3

To be a probability density function, a function must satisfy two conditions:

1. The function must be non-negative over its domain: f(x) ≥ 0 for all x in the domain.

2. The integral of the function over its domain must be equal to 1: ∫f(x)dx = 1 over the domain.

Let's check whether f(x) = x on [0, 6] satisfies these conditions:

1. f(x) ≥ 0 for all x in the domain, since x is non-negative on [0, 6].

2. ∫f(x)dx = ∫0^6 x dx = [x^2/2]0^6 = 18, which is not equal to 1.

Therefore, f(x) is not a probability density function.

Since the integral of the function over its domain is not equal to 1, f(x) cannot be a probability density function.

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Answer:Kelas: 7

Mapel: matematika

Kategori

: Kata kunci aritmatika sosial: laba, rugi,

Kode impas: 7.2.6 [revisi matematika kelas 7 K13 Bab 6-aritmatika sosial]

Diskusi:

dalam kegiatan atau kondisi yang kita ketahui 3 istilah, yaitu:

1. untung

2. kehilangan

3. impas.

Jika aktivitas atau kondisi keuntungan, penarikan harga lebih kecil dari entri

Harga.

Jika kondisi peristiwa atau kerugian, harga penarikan lebih besar dari entri

Harga.

Jika aktivitas atau kondisi impas, harga pengeluaran sama dengan entri

Harga.

Mari kita lihat

Pertanyaan.

Catat tabel di lampiran 2.

1. jika harga masuk RP 700.000, 00 dan harga produksinya Rp 900,000, 00, maka harga pendapatan lebih kecil dari harga pengeluaran.

Jadi, kondisi ini

Kehilangan.

Kemudian

RP 900,000-RP 700.000

, 00 = RP 200,000 Jadi, jumlah kerugian adalah RP 200,000, 00 2.

Jika harga masuk adalah Rp 1.100.000 dan biaya pengeluaran Rp 1.100,00, maka harga pendapatan sama dengan harga penarikan.

Jadi, kondisi impas

Terjadi.

3. jika harga tiket masuk RP 2.100.000 dan harga pengeluaran RP 2.000,00, maka harga masuk lebih besar dari pengeluaran

Harga.

Jadi, kondisi yang terjadi menguntungkan

.

Kemudian

RP 2.100.000-RP 2.000.000, 00 = RP 100,000 Jadi, jumlah keuntungannya RP 100,000, 00.

4. jika harga masuk RP 1.650.000 dan harga produksi RP 1.550.000, maka harga masuk lebih besar dari pengeluaran

Harga.

Jadi, kondisi yang terjadi menguntungkan

.

Kemudian

RP 1.650.000-RP 1.550.000 = RP 100,000 Jadi, jumlah keuntungannya RP 100,000, 00.

berharap ini membantu!

The number of sophomores after reducing ratio 1840.

What is ratio?

 A ratio in math displays how many times one number is contained in another. The ratio of oranges to lemons, for instance, is eight to six if there are eight oranges and six lemons in a bowl of fruit. In a similar way, the ratio of oranges to all other fruits is 8:14, while the ratio of lemons to oranges is 6:8.

Here the ratio is,

=> freshmen: sophomore = 12: 16

Here there total is 3220.

Total ratio = 12+16 = 28 ,

Then ,

28 = 3220

16 = x

After inter multiplication ,

=> x = \(\frac{3220*16}{28}\)

=> x = 1840.

Hence the number of sophomores is 1840.

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Answer:

=>10x-2

Step-by-step explanation:

=>(-5x+1)(-2)

=>-2(-5x+1)

=>-2(-5x+1)

=>10x-2

Answer:

Step-by-step explanation:

(-5x+1)(-2)

-2×-5x-2

10x-2

Answer: D. She is above 11.5% of test takers

Step-by-step explanation:

So logically we can eliminate like 3 answers and let me explain why

So first we can eliminate both A and B because the question asks "Does this score place Sheila in the bottom 10% of test takers?" If the answer were yes she wouldn't be "above 8.5%" or "above 11.5%" because she would be below.

So that would leave both C and D right. Lets look at C first. It says "No, she is above 8.5% of test takers" But if she is above 8.5% she could hypothetically be in the 9% or the 9.5% of test takers. Since this answer doesn't gurantee she would be above 10% we can't choose it. Now D it says "No, she is above 11.5% of test takers" This is correct because She is not in the bottom 10% because according to the empirical rule she is I would say around or just under 16% of test takers. Also the 11.5% part gurantees that anything above the number 11.5 is greater than 10%. Unlike in C which only says the number is greater than 8.5 which means the number could be 8.6 which is NOT greater than 10.

Answer:

It is D

Step-by-step explanation:

The equation of the horizontal asymptote is  y = − 4  .Horizontal Asymptote:  y = - 4

The chances of success in cycling across the United States is higher on the central route because more than half of the people who started on this route finished it (52%), while on the other routes the chances of successful completion is lower (route north (0%) south (0.02%).

Probability is a way of measuring the certainty that an event will occur represented by a numerical value from 0 to 1, where an impossible event corresponds to zero and a certain event corresponds to one.

According to the above, to find the probability of success in crossing the United States from coast to coast, we must divide the number of successful attempts by the total number of attempts as shown below:

North Route

Center Route

South Route

According to the above, the highest probability of success is found in the central route with 0.52, that is to say that more than half of those who tried this route finished.

Note: This question is incomplete because there is missing information. Here is the complete information:

Doug is going to ride his bicycle 3,000 miles across the United States, from coast to coast. He wants to choose the route that will give him the greatest chance of success. Here's what he finds in his research on him:

There have been 2 attempts on the northern route from Maine to Washington. Both of those riders made it 2,000 miles and quit in Montana.

There have been 19 attempts on the central route from Vir-ginia to California; 9 of those riders didn't do it and the other 10 made it all the way to the Pacific.

There have been 32 attempts on the southern route from Florida to San Diego. One of those riders made it the whole way. Another realized he was out of shape, and quit before he even started. The other 30 riders quit somewhere in Texas. They were evenly distributed between 1,300 and 1,700 miles.

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Answer:

1260

Step-by-step explanation:

12/72 is 1/6 of the students going to the play

210 students go to play

210 times 6 is 1260

Answer:

1260 students

Step-by-step explanation:

Let x be the number of students in the school.

12 of the 72 students surveyed said they would attend the school pay so  

 (12/72)x=(1/6)x gives the predicted number of ticket sales.  (Here  12*6=72 so it becomes 1/6)

The table shows 210 students purchased tickets so( 1/6)x=210  

x=6*210

x=1260 students attend the school.

The integral ∫(4x - 2)dx from [-2, 2] is equal to the area between the x-axis and the function 4x - 2 over the interval [-2, 2], which is 32.

The integrand is 4x - 2.

To evaluate the integral geometrically in terms of area, we can interpret the integral as the area between the x-axis and the function 4x - 2 over the interval [-2, 2]. We can break this area into two parts: the area under the line y = 4x and the area under the line y = 4x - 2.

The area under the line y = 4x is given by the integral ∫4x dx from -2 to 2, which is equal to [2x^2] from -2 to 2, or 2(2^2) - 2(-2^2) = 16.

The area under the line y = 4x - 2 is given by the integral ∫(4x - 2) dx from -2 to 2, which is equal to [2x^2 - 2x] from -2 to 2, or 2(2^2) - 2(2) - [2(-2^2) - 2(-2)] = 8 - (-8) = 16.

Therefore, the total area between the x-axis and the function 4x - 2 over the interval [-2, 2] is 16 + 16 = 32.

So, the integral ∫(4x - 2)dx from [-2, 2] is equal to the area between the x-axis and the function 4x - 2 over the interval [-2, 2], which is 32.

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I Agree With person up  

:p

The coordinates of A' are (5, -3).

Since the reflected quadrilateral A'B'C'D' is then translated 3 units right and 2 units up to form quadrilateral A"B"C"D, the coordinates of A" are (8, -1).

In Mathematics and Geometry, a reflection over the x-axis is modeled by this transformation rule (x, y) → (x, -y). This ultimately implies that, a reflection over the x-axis would maintain the same x-coordinate while the sign of the x-coordinate changes from positive to negative or negative to positive.

Since quadrilateral A'B'C'D' underwent a reflection across the x-axis to form quadrilateral AB'CD', the original coordinates of triangle NLM can be calculated as follows;

(x, y)            →      (-x, y)

A (-5, -3)      →     A' (5, -3)

By applying a translation, we have:

A' (5, -3)  →      (5 + 3, -3 + 2) = A" (8, -1).

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

In a chi-square test, the expected frequencies are the frequencies that are expected to occur under the terms of the null hypothesis. The correct option is a. are the frequencies that are expected to occur under the terms of the null hypothesis.

The null hypothesis assumes that there is no significant difference between the observed frequencies and the expected frequencies. Therefore, the expected frequencies are calculated based on the assumption that there is no relationship between the variables being studied.

The researcher calculates the expected frequencies based on the total sample size and the proportion of each category in the sample. Once the expected frequencies have been calculated, the researcher can then compare them to the observed frequencies to determine if there is a significant difference between the two.

It is important to note that the expected frequencies are not the same as the frequencies actually observed from the results of conducting research. Rather, they are a prediction of what would be expected to occur if there was no relationship between the variables being studied.

Overall, the expected frequencies play a critical role in the chi-square test, as they provide a baseline for comparison with the observed frequencies and allow the researcher to determine if there is a significant relationship between the variables being studied. The correct option is a. are the frequencies that are expected to occur under the terms of the null hypothesis.

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a) f(2) = 2f(1) + 3 = 2*5 + 3 = 13

b) f(8) = 2f(4) + 3 = 2(2f(2) + 3) + 3 = 2(2(2f(1) + 3) + 3) + 3 = 47

c) f(64) = 2f(32) + 3 = 2(2f(16) + 3) + 3 = 2(2(2f(8) + 3) + 3) + 3 = 515

d) f(1024) = 2f(512) + 3 = 2(2f(256) + 3) + 3 = ... = 4194315

The given recursive formula for f(n) is f(n) = 2f(n/2) + 3 when n is an even positive integer, and f(1) = 5.

To find f(2), we can simply use the formula with n=2, which gives us f(2) = 2f(1) + 3 = 2*5 + 3 = 13.

To find f(8), we can use the formula repeatedly with decreasing values of n, until we get to f(8). We first use n=4, which gives us f(4) = 2f(2) + 3. We then use n=2, which gives us f(2) = 2f(1) + 3. Plugging this into the previous equation gives us f(4) = 2(2f(1) + 3) + 3 = 11. Finally, we use n=8 with f(4) = 11, which gives us f(8) = 2f(4) + 3 = 2(11) + 3 = 47.

Using similar reasoning, we can find f(64) by repeatedly applying the formula with decreasing values of n until we get to f(64), and f(1024) in the same way.

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Answer:

Step-by-step explanation:

-Light from a stationary source travels at 300,000 km/sec.

- Or 186,000 miles/sec.

Hope this helps!