Question

A "sleep habits" survey answered by 23 randomly selected New Yorkers contained the question "How much...

A "sleep habits" survey answered by 23 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.72 hours, with a corresponding sample standard deviation of 0.8 hours. Conduct a hypothesis test to see if there is evidence that New Yorkers (who live, after all, in "the city that never sleeps") on average get less than 8 hours of sleep per night, using α=0.05.

a. The t test statistic is:  
Round your answer to 3 decimal places

b. What is probability that we would obtain a test statistic at least this extreme if the population mean sleep time for New Yorkers was not less than 8 hours per night?

Hint: the phrasing of this question is based on the definition of a particular statistic. Round your answer to 3 decimal places

c. Using a level of significance of 0.05, the data: provides statistically significant OR does not provide statistically significant evidence to suggest that New Yorkers on average get less than 8 hours of sleep per night.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

thank you

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A "sleep habits" survey answered by 23 randomly selected New Yorkers contained the question "How much...
A "sleep habits" survey answered by 23 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.75 hours, with a corresponding sample standard deviation of 0.8 hours. Conduct a hypothesis test to see if there is evidence that New Yorkers (who live, after all, in "the city that never sleeps") on average get less than 8 hours of sleep per night, using α=0.05. a. The t test statistic is:   Round...
A "sleep habits" survey answered by 48 randomly selected New Yorkers contained the question "How much...
A "sleep habits" survey answered by 48 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.85 hours, with a corresponding sample standard deviation of 0.82 hours. We want to test against the null hypothesis that New Yorkers get, on average, 8 hours of sleep per night. α=0.05. b. The t test statistic is: _______ (Round your answer to 3 decimal places) c. The approximate 95% CI is: ______ to...
A "sleep habits" survey answered by 46 randomly selected New Yorkers contained the question "How much...
A "sleep habits" survey answered by 46 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.8 hours, with a corresponding sample standard deviation of 0.82 hours. We want to test against the null hypothesis that New Yorkers get, on average, 8 hours of sleep per night. α=0.05. a. This null hypothesis should be formally written as: (You have two attempts at this question.) H0: μdifference = 8 H0: μ...
Sleep habits of New Yorkers. New York is known as the city that never sleeps. A...
Sleep habits of New Yorkers. New York is known as the city that never sleeps. A random sample of 9 New Yorkers were asked how much sleep they get per night. Statistical summaries of these data are shown below. Do these data provide strong evidence that New Yorkers sleep less than 8 hours a night on average? (Use significance value α=0.03.) N       x¯           s 9 7.83        0.8 H0:μ HA:μ p-value: Based on this information, we may Accept/Reject Find...
New York is known as "the city that never sleeps." Twenty-five (n=25) New Yorkers were randomly...
New York is known as "the city that never sleeps." Twenty-five (n=25) New Yorkers were randomly sampled and asked how much sleep they get per night and the sample mean was 7.3 hours. To test if New Yorkers sleep less than 8 hours a night on average (H0: μ = 8 v.s. Ha: μ < 8, where μ is the mean number of hours New Yorkers sleep a night), the P-value is a) the probability of getting a random sample...
Assume the gen. population gets an average of 7 hours of sleep per night. You randomly...
Assume the gen. population gets an average of 7 hours of sleep per night. You randomly select 55 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.83 hours with a standard deviation of 0.55 hours. You claim that college students get less sleep than the general population. That is, you claim the mean number of hours of sleep for all college students is less than...
The author obtained times of sleep for randomly selected adult subjects included in the National Health...
The author obtained times of sleep for randomly selected adult subjects included in the National Health and Nutrition Examination Study, and those times (hours) are listed below.   4, 7,   4, 4, 8, 6, 8, 7, 7, 6, 7, 6. A common recommendation is that adults should sleep between 7 hours and 9 hours each night. Use 0.05 significance level to test the claim that the mean amount of sleep for adults is less than 7 hours. Reject . There is...
The author obtained times of sleep for randomly selected adult subjects included in the National Health...
The author obtained times of sleep for randomly selected adult subjects included in the National Health and Nutrition Examination Study, and those times (hours) are listed below. 4, 7, 4, 4, 8, 6, 8, 7, 7, 6, 7, 6. A common recommendation is that adults should sleep between 7 hours and 9 hours each night. Use 0.05 significance level to test the claim that the mean amount of sleep for adults is less than 7 hours. Do not reject H...
In this discussion, we are going to consider 5 studies on the amount of sleep college...
In this discussion, we are going to consider 5 studies on the amount of sleep college students get in a typical night. It is long been recommended that adults should get 8 hours of sleep each night. Five scientists each take a random sample of n students to help them learn about the true average number of hours sleep college students get in a typical night (so each scientist has the same number of students, but different individuals, in their...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT