Use the following to answer the questions below:
A Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. The bootstrap distribution (based on 5,000 samples) is provided.
‪
-A sample of 148 college students reports sleeping an average of 6.85 hours on weeknights. The sample size is large enough to use the normal distribution, and a bootstrap distribution shows that the standard error is
Use a normal distribution to construct and interpret a 95% confidence interval for the mean amount of weeknight sleep students get at this university. Use two decimal places in your answer.
A) 6.51 to 7.19 hours
B) 4.89 to 8.81 hours
C) 6.68 to 7.03 hours
D) 4.81 to 8.89 hours

Question

Use the following to answer the questions below:
A Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. The bootstrap distribution (based on 5,000 samples) is provided.
‪ 
-A sample of 148 college students reports sleeping an average of 6.85 hours on weeknights. The sample size is large enough to use the normal distribution, and a bootstrap distribution shows that the standard error is  
 Use a normal distribution to construct and interpret a 95% confidence interval for the mean amount of weeknight sleep students get at this university. Use two decimal places in your answer.
A) 6.51 to 7.19 hours 
B) 4.89 to 8.81 hours 
C) 6.68 to 7.03 hours 
D) 4.81 to 8.89 hours

Quizplus · Accepted Answer

z* = 1.96
6.85 ± 1.96(0.175)
6.51 to 7.19 hours
We are 95% sure that the mean amount of weeknight sleep students get at this university is between 6.51 and 7.19 hours.

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