Your marketing team has conducted two focus group sessions to evaluate a new product design. The first focus group consisted of teenagers and resulted in four out of five liking the new product. The second group was made up of parents of young children. Only one out of five people in this group said they liked the same new product as the teens. With 90% confidence (Z = 1.64), can you say that there is a difference between the views of these two populations? Please show your calculations, use 2 decimal places in your calculation answer, and justify your answer regarding differences.

Answers

Answer 1

Answer:

Since the calculated Z falls in the critical region therefore the null hypothesis is rejected and concluded that there is a difference between the views of these two populations.

Step-by-step explanation:

1) Formulate the hypotheses:

H0 : p1=p2

Ha: p1 ≠ p2

2) The significance level is chosen at ∝= 0.1  

3) The critical region is Z∝/2 ≥ ± 1.645

4) The test statistic under H0 is

Z = p1^- p2^/ √p^q^( 1/n1 + 1/n2)

p1^= proportion of of teenagers liking the new product.

p2^ = proportion of of parents of young children liking the new product.

p1^= 4/5

p2^= 1/5

p^= 5(0.8) + 5(0.2)/5+5= 4+1/10= 0.5

q^= 0.5

Thus

Z= p1^- p2^/ √p^q^( 1/n1 + 1/n2)

z= 0.8-0.2/√0.5*0.5( 1/5 + 1/5)

z= 0.6/ 0.316227

z= 1.897

5) Conclusion:

Since the calculated Z falls in the critical region therefore the null hypothesis is rejected and concluded that there is a difference between the views of these two populations.


Related Questions

3(x-4)^2=27 solution

Answers

Answer:

x = 11

x = 7

Step-by-step explanation:

divide each side by 3 to get:

(x-4)² = 9

(x-4)² is the difference of two squares and has these factors:

(x+2)(x-2) = 9

x + 2 = 9;  x = 7

x - 2 = 9;  x = 11

Natalie is trying to pick out an outfit for the first day of school. She can choose from 7 pairs of pants, 2 t-shirts, and 2 pairs of shoes. How many different outfits does Natalie have to choose from?

Answers

Answer:

Shirt A, Skirt A, Shoe A

Shirt A, Skirt A, Shoe B

Shirt A, Skirt B, Shoe A

Shirt A, Skirt B, Shoe B

Shirt A, Skirt C, Shoe A

Shirt A, Skirt C, Shoe B

The number of ways Natalie has to choose outfits for her first day school is 28 ways.

What is the Permutations?

Permutations are different ways of arranging objects in a definite order. It can also be expressed as the rearrangement of items in a linear order of an already ordered set. The symbol nPr is used to denote the number of permutations of n distinct objects, taken r at a time.

Given that, Natalie is trying to pick out an outfit for the first day of school. She can choose from 7 pairs of pants, 2 t-shirts, and 2 pairs of shoes.

Let 7 pairs of pants be P1, P2, P3, P4, P5, P6 and P7.

Let 2 t-shirts be T1 and T2

Let 2 pairs of shoes be S1 and S2

Now,

1) P1, T1, S1                                      

2) P1, T2, S2

3) P2, T1, S1

4) P2, T2, S2

5) P3, T1, S1

6) P3, T2, S2

7) P4, T1, S1

8) P4, T2, S2

9) P5, T1, S1

10) P5, T2, S2

11) P6, T1, S1

12) P6, T2, S2

13) P7, T1, S1

14) P7, T2, S2

15) P1, T1, S2                                      

16) P1, T2, S1

17) P2, T1, S2

18) P2, T2, S1

19) P3, T1, S2

20) P3, T2, S1

21) P4, T1, S2

22) P4, T2, S1

23) P5, T1, S2

24) P5, T2, S1

25) P6, T1, S2

26) P6, T2, S1

27) P7, T1, S2

28) P7, T2, S1

Other way = 7×2×2

= 28 ways

Therefore, the number of ways is 28 ways.

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Describe the transformation shown in the graph

Answers

Answer:

270 degrees CCW rotation

Step-by-step explanation:

This is 90 degrees CW or 270 degrees CCW rotation

Correct choice is C or orange tile

What is the amplitude of the function?

A)2


B)3


C)4


D)5

Answers

The answer is b sorry if it’s wrong

The amplitude of the function is the range A = 3

What are domain and range?

The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). The range of a function is the set of values that the function assumes. This set is the values that the function shoots out after we plug an x value in.

The range is the set of outputs of a relation or function. In other words, it's the set of possible y values. Recall that ordered pairs are of the form (x,y) so the y coordinate is listed after the x. The output is listed after the input.

Given data ,

Let the amplitude of the function be represented as A

Now , the value of A is

The range of the function = Amplitude x 2

And , Amplitude of the function A = | max - min | / 2

On simplifying , we get

A = | -4 - 2 | / 2

A = 6/2

A = 3

Therefore , the value of A is 3

Hence , the amplitude is A = 3

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Quadrilateral CDEF is similar to quadrilateral GHIJ. Find the measure of side IJ. Round your answer to the nearest tenth if necessary. Figures are not drawn to scale.

Thank you:)

Answers

Answer:

the answer is 5425.23

Step-by-step explanation:

Since this is a multistep equat you would need a calculator for this

Please help me it would mean a lot !!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

Given

f(x) = 4x + 7

so

f(a + h) = 4(a + h) + h

          = 4a + 4h +h

          = 4a + 5h

f(a) = 4a + 7

now by the question

[tex]\frac{f(a+h) - f(a)}{h}\\=\frac{4a + 5h - 4a + 7}{h}\\=\frac{ 5h + 7}{h} \\= \frac{5h}{h} + \frac{7}{h} \\= 5 +\frac{7}{h}[/tex]

hope it helps :)

Answer please !! Due in 45 minutes m

Answers

Answer:

(-3,3)

Step-by-step explanation:

Using elimination:

Multiply the first equation by 8 and the second by 5 which equals

40x+56y=48

-40-60y=-60

Now you add them together

40x+(-40x)=0 so that crosses out

56y+(-60y)= -4y

48+(-60)=-12

You now have -4y=-12

Divide by -4

y=3

Now plug in y to any of the equations

5x+7(3)=6

5x+21=6

Subtract 21 from both sides

5x=-15

Divide by 5

x=-3

Your final solution is (-3,3)

How many 10ths equivalent to 3/5

Answers

Answer: 6 tenths

Step-by-step explanation:

3/5 = 6/10 (multiply by 2)

Hey, can someone please help me with this? I don’t know how to solve it.
Thank you.

Answers

Answer:

24

Step-by-step explanation:

Twice x decreased by 4 is 36. What is x

Answers

Answer: x=16

Step-by-step explanation:

2x+4=36

Subtract 4 from both sides and get

2x=32

Divide both sides by 2 to isolate x and you get

x=16

Which expression is equivalent to 6x-9,
3

Answers

Answer:

the expresion its equal at the d9feremce between you and the excercise so its 7

Use the matrix tool to solve the system of equations. Choose the correct
ordered pair.
4x - 7y = -5
-6x+ 5y = 2
PLEASE HELP

Answers

4x-9y=2 this is the answer

in a drawer, there are 3 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace or, turn pick put a 2nd sock. What is the probability that you will pick a brown then black?

A) 12/81


B) 6/81


C) 8/81

Answers

I believe the answer is B) 6/81

Please help, how many terms are in the expression?

Answers

Answer:

4

Step-by-step explanation:

15% of customers that come to your
taco truck order two tacos. If 300 guests
come to your store, how many of them
will you expect to order two tacos?
NO LINKS

Answers

Answer:

45

Explanation:

No explanation

The second angle of a triangle is four times the first and the third is 5 degrees
more than twice the first. Find the measures of the angles.

Answers

Answer:

25

100

55

Step-by-step explanation:

Givens

Let the first angle = x

Let the second angle = 4x

Let the third angle = 2x + 5

All triangles have 180

Equation

x + 4x + 2x + 5 = 180

Solution

Begin by combining like terms

7x + 5 = 180

7x = 180 - 5

7x = 175

7x/7 = 175/7

x = 25

Answer

First angle = x    =          25

Second angle = 4x =    100

Third angle = 2x + 5 =    55

Total                               180

a triangle has a length of 15cm and 17cm. select all the values of its third side that would make it a right triangle.

options are:
8cm
29cm
2cm
514 squared
29 squared

Answers

Answer:

8cm & 514 squared are correct answers

Step-by-step explanation:

Solve the inequality for w.
4+4ws-16
Simplify your answer as much as possible.

Answers

Answer:

The answer is 4ws - 12

Step-by-step explanation:

1) Collect like terms.

[tex]4ws + (4 - 16)[/tex]

2) Simplify.

[tex]4ws - 12[/tex]

therefor, the answer is 4ws - 12.

4. Ethan can run 3 miles in 30 minutes. At this rate, how long will it take Ethan to run one
mile?

Answers

It will take him 10 mins

Find the missing term in the
geometric sequence.
13,[ ? 1,208

Answers

Answer:

?=52 or ?=-52

Step-by-step explanation:

Find the geometric mean:

?=sqrt(13*208)

?=sqrt(2704)

?=±52

So ? can be either 52 OR -52. Keep in mind that since we have an odd number of terms in the sequence, -52 is a possible missing term.

13*4=52, 52*4=208

13*-4=-52, -52*-4=208

HAiiiiiiii help T-T...

it will be helpful

Answers

Answer:

The popsicle stick is 11 and 6/10 inches and 4.9 centimeters.

The pencil is 7 and 3/10 inches and 2.14 centimeters.

The paperclip is 6 and 3/10 inches and 2.8 centimeters.

Step-by-step explanation:

Just look at where the red dotted lines are

hope this helps

How many 5-letter arrangements of the letters T, E, X, A, S can be created if each
letter is used only once?

Answers

Answer:

Well theres Texas of course then Taxes..then i dont know any more that make sense

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☁Brainliest is greatly appreciated☁

Hope this helps!!

- Brooklynn Deka

There are 120 ways to arrange 5 letter wor with each letter is used only once.

What is Permutations?

A permutation is an arrangement of objects in a definite order. The members or elements of sets are arranged here in a sequence or linear order.

Here, 5 letters are arranged in 5! ways

         5! = 5 X 4 X 3 X 2 X 1

             = 120

Thus, there are 120 ways to arrange 5 letter wor with each letter is used only once.

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Select all the correct statements.

Answers

Answer:

C,D,E,F

Step-by-step explanation:

A amplitude is 2

B period is 4pi

Answer:

f option is write

Step-by-step explanation:

because it is true

mark me brainlist

1. 3, 4
2. odd number, even number
3. 5, 5
4. odd number, odd number
5. 2, 3
6. 1, 3
7. 7, 1

Answers

Answer:

Step-by-step explanation:

4. odd number, odd number

5. 2, 3

6. 1, 3

7. 7, 1

Someone please help me I’ve been trying all day!

NO LINKS , answers only
I MEAN IT!!!!

Answers

Answer:

Step-by-step explanation:

You want to set up a system. We are given some points fo we can set up inputs and outputs. F(0) = 5, given by point (0,5). and F(3)=135, given by point (3,135). The exponential function general equation is F(x)= a(b)^x. plug in out functions into the general equation to get a(b)^0=5 and a(b)^3=135. Then you simplify and solve for a. In the equation a*b^0=5, anything to the power of 0 is 1. so a*1=5. Therefore a=5. we plug in the a to the second equation to find b. 5*b^3=135. b^3=27. b=3 from simplifying. Therefore, the equation should be 5(3)^x. THATS IT!

help please!! | no links
The Martinez family ordered a large pizza pie for dinner. After everyone ate, one slice was left in the box forming a 75∘angle. Use the provided protractor below to explain how to construct a 75∘angle.

Answers

Answer:

,,,,,,,,,,,,,,,,,,,,,

10 POINTS FOR THE CORRECT ANSWER THIS IS DUE TODAY PLEASE HELP ME

Answers

Answer:

Step-by-step explanation:

8

8


15+49=x^2
64=x^2
X=8

WILL NAME BRAINLIST PLEASE
Use the table to write a linear function that relates y to x . PLEASE NO HACKERS
y=

Answers

Answer:

x = -4y

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

Create an expression equivalent to 4(3x+2y)

Answers

Answer:12x+8y

Step-by-step explanation:Simplify the expression

The expression equivalent to 4(3x+2y) is 12x +8y.

What is the equivalent expression?

Equivalent expressions are expressions that have similar value or worth but do not look the same.

Create an expression equivalent to 4(3x+2y).

The equivalent expression is determined in the following steps given below.

[tex]\rm =4(3x+2y)\\\\=4 \times 3x+4\times 2y\\\\=12x+8y[/tex]

Hence, the expression equivalent to 4(3x+2y) is 12x +8y.

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2- Describe the cross section

Answers

The cross-section cut by the plane yields a quadrilateral with length and width equal to the length and width of the face that is parallel to the plane.

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