1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Luden [163]
2 years ago
9

a popular weekly magazine asserts that fewer than 40% of households in the united states have changed their lifestyles because o

f escalating gas prices. a recent survey of 180 households finds that 67 households have made lifestyle changes due to escalating gas prices.the standard error of p(bar) is:the value of the test statistic is:the pvalue is:at a=0.10 and using the p-valuein light of your conclusion, what test error may happen?
Mathematics
1 answer:
kiruha [24]2 years ago
8 0

Answer: The null hypothesis is not rejected.

Step-by-step explanation:

Since we have given that

n = 180

x = 67

So, \hat{p}=\dfrac{x}{n}=\dfrac{67}{180}=0.372

Hypothesis :

H_0:\hat{p}\geq 0.4\\\\H_1:\hat{p}

So, test statistic value would be

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.372-0.4}{\sqrt{\dfrac{0.4\times 0.6}{180}}}\\\\z=\dfrac{-0.027}{0.03645}\\\\z=-0.741

At 0.01 level of significance, z = -1.28

So, -1.28<-0.741

So, we will not reject the null hypothesis as p - value = 0.2234.

Hence, the null hypothesis is not rejected.

You might be interested in
Can someone help me with this Standard form? I don’t quite exactly understand what I would be putting for the X side
solniwko [45]
For the x Side you have to put 5x.
8 0
2 years ago
Adam is selling tickets for a concert in the park. An adult ticket costs $8.50 and a child ticket costs $5.00. Adam sells x adul
Elanso [62]

Answer:

Answer is A

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
The student scores on mrs fredericks mathematics test are shown on the stem and leaf plot below
Anna11 [10]
Where is the plot. put it in  and ill answer
6 0
3 years ago
There are 3 answers FYI.
harina [27]

Answer:

cool i think there are 4 questons

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
To find 5, Beau found 22 = 4 and 32 = 9. He said that since 5 is between 4 and 9, 5 is between 2 and 3. Beau thinks a good estim
shusha [124]

Complete question

To find \sqrt{5} , Beau found 2^2 = 4 and 3^2 = 9 . He said that since 5 is between 4 and 9, \sqrt{5}, is between 2 and 3. Beau thinks a good estimate for \sqrt{5} , is \frac{2 + 3}{2} =  2.5 Is his estimate high or low? How do you know?

Answer:

The estimation is high because 5 is very close to 4 so \sqrt{5} will also be very close to \sqrt{4} which is lower than the estimate

In order to get a good estimate

The first step is to choose a number between 2 and 3 let say 2.8 , 2,85 , 2.9 and the square them

i.e

2.1^2 =  4.41

     2.2^2 =  4.84

      2.3^2 =  5.29

From here we can see that \sqrt{5}  lies between 2.2 and 2.3 but is closer to  2.2

So a good estimate for \sqrt{5} is 2.2

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • A recipe used 1/4 cup of sugar for every 2 teaspoons of cocoa.
    14·1 answer
  • 2nd out of 10 questions
    12·2 answers
  • The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway varies from 14 to 35 mph and
    7·1 answer
  • 1. Find the critical points of the function. Then use the Second Derivative Test to determine whether they are local minima, loc
    13·1 answer
  • I NEED HELP PLEASE HURRY
    8·2 answers
  • Please help me out please
    6·1 answer
  • Brainiest to correct answer<br><br> 7 (3x - 2)
    12·2 answers
  • What is the best type of sampling for a survey?
    10·1 answer
  • Solve the system of equations below.<br> y=x-1<br> x+y=3
    12·1 answer
  • Consider the inequality X &gt; - 2.5 Determine whether each value of X makes this inequality true Select ALL that apply.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!