A weight loss center provided a loss for 72% of its participants. The center's doctor believes this is not a sufficient percentage of people losing weight. She decides to test a new weight loss program on a random sample size of 140 subjects and found weight loss in 78% of the participants. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed.

Answers

Answer 1

Answer:

Part A;

The null hypothesis, H₀, is that the weight loss obtained in the new program is less than or equal to the weight loss obtained in the original program

The alternative hypothesis, Hₐ, is that the weight loss obtained in the new program is more than the weight loss obtained in the original program

Part B;

There is not evidence to suggest that the new program results in an improvement in the percentage of its participants that had weight loss

Step-by-step explanation:

Part A

The participants of the weight loss center that, p₀ = 72% = 0.72

The belief of the center's doctor is that the percentage is not sufficient for the proportion of people losing weight

The number of subjects in the sample the center's doctor used for the test, n = 140

The weight loss percent of the sample using the new program, [tex]\hat p[/tex] = 78% = 0.78

The null hypothesis, H₀;  [tex]\hat p[/tex] ≤ p₀

The alternative hypothesis, Hₐ; [tex]\hat p[/tex] > p₀

Part B

The z-test is given as follows;

[tex]z=\dfrac{\hat{p}-p_0}{\sqrt{\dfrac{p_0 \cdot (1 - p_0)}{n}}}[/tex]

[tex]\therefore z=\dfrac{0.78-0.72}{\sqrt{\dfrac{0.72 \cdot (1 - 0.72)}{140}}} = 1.53113883009 \approx 1.531[/tex]

The p-value = P(Z ≥ 1.531) = 1 - P(Z ≤ 1.531) = 1 - 0.93699 = 0.06301

Given that the p-value = 0.06301 is larger than the significance level of 0.05, we fail to reject the null

Therefore, there is not enough evidence to suggest that the mean of the weight loss of participants in the new method is more than the weight loss percentage obtained from the original weight loss program.


Related Questions

Width = 1 ft; height = 20 ft ; length = 5ft

Does anyone know the volume


Need now!

Answers

Answer:

100 cm 3

Step-by-step explanation:

20 x 1 = 20

20 x 5 = 100 cm 3

100 cm 3 is the volume

WILL MARK BRAINLIEST suppose a-1/a=5. Find a^2 + 1/a^2

Answers

Answer:

a= 1/(a-5) then a2-1/A2 = 5√29

Step-by-step explanation:

Want brainliest and 100 points (maybe bpbux)... then answer this
How could you find the circumference if you had the lenght of the radius, but not the length of the diameter.

Answers

Answer:

The equation to find the circumference is C=2πr. This means you do not need the diameter. However, if you did want to find the diameter, it is 2 times the radius.

Step-by-step explanation:

The length of a rectangle is 5 metres less than twice the breadth. If the perimeter is 50 meters,find the length and breadth

Answers

S O L U T I O N :

As per the given question, it is stated that the length of a rectangle is 5 m less than twice the breadth.

Assumption : Let us assume the length as "l" and width as "b". So,

[tex] \twoheadrightarrow \quad\sf{ Length =2(Width)-5} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=(2b-5) \; m} [/tex]

Also, we are given that the perimeter of the rectangle is 50 m. Basically, we need to apply here the formula of perimeter of rectangle which will act as a linear equation here.

[tex]\\ \twoheadrightarrow \quad\sf{ Perimeter_{(Rectangle)} = 2(\ell +b) } \\[/tex]

l denotes length b denotes breadth

[tex]\\ \twoheadrightarrow \quad\sf{50= 2(2b-5+b)} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50= 2(3b-5)} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50= 6b - 10} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50+10= 6b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{60= 6b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{\cancel{\dfrac{60}{6}}=b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\underline{\bf{10\; m = Width }} \\[/tex]

Now, finding the length. According to the question,

[tex] \twoheadrightarrow \quad\sf{ \ell=(2b-5) \; m} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=2(10)-5\; m} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=20-5\; m} [/tex]

[tex]\\ \twoheadrightarrow \quad\underline{\bf{15\; m = Length }} \\[/tex]

Therefore, length and breadth of the rectangle is 15 m and 10 m.

I need help with these

Answers

Given:

The figures of triangles and their mid segments.

To find:

The values of n.

Solution:

Mid-segment theorem: According to this theorem, mid segment of the triangle is a line segment that bisect the two sides of the triangle and parallel to third side, The measure of mid-segment is half of the parallel side.

11.

It is given that:

Length of mid-segment = n+8

Length of parallel side = 6n

Using mid-segment theorem, we get

[tex]n+8=\dfrac{1}{2}(6n)[/tex]

[tex]n+8=3n[/tex]

[tex]8=3n-n[/tex]

[tex]8=2n[/tex]

Divide both side by 2.

[tex]\dfrac{8}{2}=n[/tex]

[tex]4=n[/tex]

Therefore, the value of n is equal to 4.

12.

It is given that:

Length of mid-segment = 5n

Length of parallel side = 8n+10

Using mid-segment theorem, we get

[tex]5n=\dfrac{1}{2}(8n+10)[/tex]

[tex]5n=4n+5[/tex]

[tex]5n-4n=5[/tex]

[tex]n=5[/tex]

Therefore, the value of n is equal to 5.


Find the quotient.
12^9/12^3

A) 1227

B) 1212

C)126

D) 123

Answers

Answer:

A) 1227

Step-by-step explanation:

[tex]\frac{12^9}{12^3}=2985984[/tex]

[tex]12^{3}=1728\\and 12^{9}=5159780352[/tex]

choose what of the of are a rectangle choose all the answers !!!!!!

Answers

Answer:

...

Step-by-step explanation:

bottom left and the square and the parallelogram(top right)

A parallelogram is a rectangle.

Answer:

I think the answers are the bottom two.

Step-by-step explanation:

The first one I believe is a trapezoid, the second is a rhombus .

Sometimes a square is considered a rectangle.

Hope this helped.

Sorry if I am wrong.

In a local high school, the probability that a student takes environmental science given they also take geography is 22%. The probability that a student takes geography is 75%. What is the probability that a student takes environmental science and geography? Explain how you found your answer.​

Answers

Answer:

Imagine there's 100 students in the school. 72 students are taking environmental science. 25 students take both environmental science and geography.

 

That means of the 72 students taking environmental science, 25 are also taking geography. Thus, the probability that a student is taking geography given than that the student is taking environmental science is 25/72 = 0.347.

Drag numbers to the table so it shows a proportional relationship between x and y.

Answers

Answer:

the second box for y is 9

the third box for x is 2.5

im not sure about the third box for y

multiply -14/ 5 ×16/5​

Answers

Answer:

-8.96

Step-by-step explanation:

so -14/5 is -2.8

and 16/5 is 3.2

so multiple - 2.8×3.2 and you get

-8.96

-8.96 my friend…….!!!!!!!!

WILL MARK BRAINLIEST
A certain restaurant sells cups of coffee for $2 and donuts for $1.50. If the restaurant sold a total of 80 items and earned $141.50, how many donuts did the restaurant sell?

Answers

Answer: 37 donuts

Step-by-step explanation:

coffee for 2,

donuts for 1.5

c = coffee

d = donuts

lets make an equation

c*2 + (80-c)*1.5 = 141.5

from this we get:

c= 43.

if c = 43, then d is 80-43 = 37.

they sold 43 coffees, and 37 donuts.

lets check the math

43*2+37*1.5 = 141.5. math checks out

mark me brainlist

Please help this is my final

Answers

Answer:

c

Step-by-step explanation:

s

A polynomial function has a degree of 8. What is the maximum number of turning points?

Answers

Answer:

7

Step-by-step explanation:

To find the maximum number of turning points of any polynomial function, subtract one from the degree.

Since the degree is 8, subtract 1 from this:

8 - 1

= 7

So, the maximum number of turning points is 7.

Write 1 2/11 as a decimal

Answers

0.27 because if you put it like a whole fraction it would be 3/11 and as a decimal it is 0.27

Answer: 1.18. 18 is repeated.

Explanation is below.

find the surface area of this figure

Answers

Answer:

427.37 ft2

Step-by-step explanation:

can you see the photo i sent

i hope it can help you

HOLA, I'm being timed :)
Find the value of c that makes x2 + 10x + c a perfect square trinomial
a. –25
b. 10
c. –5
d. 25

thank you <3

Answers

The answer is a hope it helps

plzz help...
Which of the following statements is true? A Diameter x pi= circumference B. Circumference x pi= diameter c. Diameter pi= circumference D. Diameter x circumference = pi​

Answers

Answer: A Diameter x pi= circumference

Step-by-step explanation:

The circumference of a circle is given as:

= 2πr

where,

π = pi = 3.14

r = radius

Note that diameter = 2 × radius.

Therefore, circumference = 2πr = πd

Therefore, circumference will be pi multiplied by diameter. The correct option is A.

The correct statement is:

A. Diameter x pi = circumference

x = 6 is a solution to the inequality x– 5 < 10

Answers

Step-by-step explanation:

I am not sure what your problem is.

is this one line just a question to you ? is x=6 a solution ?

if that is the case then ... yes, x=6 is a solution to the inequality.

x - 5 < 10

x < 15

so, 6 < 15 is true, therefore, x=6 is a valid solution


need help asap! please!!!!! help

Answers

Answer:

102

Step-by-step explanation:

Answer:

answer: red flower: 20 blue flower: 5 yellow flower: 2

Step-by-step explanation:

2 + 20 × 5 = 102 so 102 is the answer hope that helps

i need help with negative poimts

Answers

Answer:

What part do you need help with? Is there a specific problem?

Step-by-step explanation:

hello please help i’ll give brainliest

Answers

Answer:

Applied force

Step-by-step explanation:

A farmer owns a total of 16 chickens and rabbits.The chickens and rabbits have 54 legs altogether.How many rabbits are there.

Answers

Answer:

27

Step-by-step explanation:

Tama poyan

27+27=54

#Keep on Learning

Answer:

11 rabbits

Step-by-step explanation:

11 x 4 = 44

44 + (5 x 2) = 44 + 10 = 54

Bob and John are 450 feet when they start running towards each other. Bob runs at a speed of 11 get per second, and John runs at a speed of 14 feet per second how too will they meet

Answers

Answer:

18 seconds

Step-by-step explanation:

Distance between both runners = 450 feets

Bob's speed = 11 ft/s

John's speed = 14 ft/s

Let The time it takes to meet = x

Recall :

Distance = speed * time

Bob's distance + John's distance = 450 feets

11x + 14x = 450

25x = 450

x = 450 / 25

x = 18 seconds

n-18=100 can somebody answer​

Answers

Answer:

n = 118

Step-by-step explanation:

Add 18 to both sides of the equation:

n = 100 + 18n = 100 + 18

Add 100 and 18.

n = 118

The question is in picture the picture provided
pls help and don't troll

Answers

John sold 30U

Rick sold 25U

So, Rick sold 5 fewer units than John.

Hope that helps.

Plzzzz helppppppppppppppp

Answers

Answer:

ok

Step-by-step explanation:

0.4567304 x 2.5678093 = ?

Answers

Answer:

1.17279656871

Step-by-step explanation:

Answer:

1.72796569

Step-by-step explanation:

0.4567304 x 2.5678093 = 1.72796569

how to calculate the base area of a square based pyramid​

Answers

Answer:

It is not complicated to derive the formula of the surface area of a square pyramid.

Start with a square pyramid as shown below and call the length of the base s and the height of one triangle l

l is the slant height. It is not for no reason this height is called slant height!

The word slant refers also to something that is oblique or bent, or something that is not vertical or straight up. Basically, anything that is not horizontal or vertical!

The area of the square is s2

The area of one triangle is (s × l)/2

Since there are 4 triangles, the area is 4 × (s × l)/2 = 2 × s × l

Therefore, the surface area, call it SA is:

SA = s2  +  2 × s × l :

Example #1:

Find the surface area of a square pyramid with a base length of 5 cm, and a slant height of 10 cm

SA = s2  +  2 × s × l

SA = 52  +  2 × 5 × 10

SA = 25  +  100

SA = 125 cm2

Find more EQUIVALENT FRACTIONS for
10/20​
9/12​.

Answers

Answer:

10/20 = 5/10, 1/2, 50/100

9/12 = 3/4, 81/108, 90/120

Step-by-step explanation:

Hello May someone Plz help me

Answers

Answer:

540°

Step-by-step explanation

From vertex A we can draw two diagonals which separates the pentagon into three triangles. We multiply 3 times 180 degrees to find the sum of all the interior angles of a pentagon, which is 540 degrees.

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