Question

In: Statistics and Probability

Sleep (Raw Data, Software Required): Assume the general population gets an average of 7 hours of...

Sleep (Raw Data, Software Required): Assume the general population gets an average of 7 hours of sleep per night. You randomly select 35 college students and survey them on the number of hours of sleep they get per night. The data is found in the table below. 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 7 hours. Test this claim at the 0.10 significance level.

(a) What type of test is this? This is a right-tailed test. This is a left-tailed test. This is a two-tailed test.

(b) What is the test statistic? Round your answer to 2 decimal places. t x =

(c) Use software to get the P-value of the test statistic. Round to 4 decimal places. P-value =

(d) What is the conclusion regarding the null hypothesis? reject H0 fail to reject H0

(e) Choose the appropriate concluding statement.

a. The data supports the claim that college students get less sleep than the general population.

b. There is not enough data to support the claim that college students get less sleep than the general population.

c. We reject the claim that college students get less sleep than the general population.

d. We have proven that college students get less sleep than the general population.

DATA ( n = 35 )

Sleep per Night
College Students

Hours   
5.0
6.6
7.3
6.4
7.3
4.6
7.8
5.7
8.7
4.8
3.6
4.8
5.3
9.3
9.9
6.5
8.8
5.1
4.7
7.0
5.0
7.4
4.4
7.5
5.7
5.8
7.3
6.4
6.1
7.6
7.1
9.7
7.3
7.1
5.2

Solutions

Expert Solution



Related Solutions

Sleep (Raw Data, Software Required): Assume the general population gets an average of 7 hours of...
Sleep (Raw Data, Software Required): Assume the general population gets an average of 7 hours of sleep per night. You randomly select 35 college students and survey them on the number of hours of sleep they get per night. The data is found in the table below. 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 7 hours. Test...
Sleep: Assume the general population gets an average of 7 hours of sleep per night. You...
Sleep: Assume the general population gets an average of 7 hours of sleep per night. You randomly select 45 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.89 hours with a standard deviation of 0.25 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...
Sleep – College Students (Raw Data, Software Required): Suppose you perform a study about the hours...
Sleep – College Students (Raw Data, Software Required): Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7.0 hours per night. You randomly select 35 college students and survey them on the number of hours of sleep they get per night. The data is found in the table below. You want to construct a 99% confidence interval for the mean hours of sleep for all...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the sleep habits of med students and non-med students. The study consists of the hours of sleep per night obtained from 30 non-med students and 25 med students. The sample data is given in the table below. Test the claim that, on average, the mean hours of sleep for all med students is different from that for non-med students. Test this claim at the 0.01...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the sleep habits of med students and non-med students. The study consists of the hours of sleep per night obtained from 30 non-med students and 25 med students. The sample data is given in the table below. Test the claim that, on average, the mean hours of sleep for all med students is different from that for non-med students. Test this claim at the 0.01...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the...
Med Student Sleep Average (Raw Data, Software Required): Here we consider a small study on the sleep habits of med students and non-med students. The study consists of the hours of sleep per night obtained from 30 non-med students and 25 med students. The sample data is given in the table below. Test the claim that, on average, the mean hours of sleep for all med students is different from that for non-med students. Test this claim at the 0.05...
Salmon (Raw Data, Software Required): Assume that the weights of Chinook Salmon in the Columbia River...
Salmon (Raw Data, Software Required): Assume that the weights of Chinook Salmon in the Columbia River are normally distributed. You randomly catch and weigh 15 such salmon. The data is found in the table below. Test the claim that the mean weight of Columbia River salmon is greater than 27 pounds. Test this claim at the 0.10 significance level. (a) What type of test is this? This is a two-tailed test.This is a left-tailed test.     This is a right-tailed test. (b)...
Salmon (Raw Data, Software Required): Assume that the weights of Chinook Salmon in the Columbia River...
Salmon (Raw Data, Software Required): Assume that the weights of Chinook Salmon in the Columbia River are normally distributed. You randomly catch and weigh 15 such salmon. The data is found in the table below. Test the claim that the mean weight of Columbia River salmon is greater than 26 pounds. Test this claim at the 0.01 significance level. (b) What is the test statistic? Round your answer to 2 decimal places. t-x= ? (c) Use software to get the...
Salmon Weights (Raw Data, Software Required): Assume that the weights of spawning Chinook salmon in the...
Salmon Weights (Raw Data, Software Required): Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 15 such salmon. The data is found in the table below. You want to construct a 99% confidence interval for the mean weight of all spawning Chinook salmon in the Columbia River. You will need software to answer these questions. You should be able to copy the data directly from the table into your...
Salmon Weights (Raw Data, Software Required): Assume that the weights of spawning Chinook salmon in the...
Salmon Weights (Raw Data, Software Required): Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 15 such salmon. The data is found in the table below. You want to construct a 95% confidence interval for the mean weight of all spawning Chinook salmon in the Columbia River. You will need software to answer these questions. You should be able to copy the data directly from the table into your...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT