1. Most experts recommend college students get at least 8 hours of sleep per night. You collect a random sample of 155 students at your college and ask how many hours of sleep they got last night. The sample mean amount of sleep last night was 7.9 hours, with a sample standard deviation of 2.1 hours. The sample distribution of hours of sleep was slightly skewed right. Does this provide evidence that students at your college are getting less than the recommended amount of sleep per night?

Use the sample results to estimate the standard error of the sampling distribution of sample means. Round to three decimal places.

2. Most experts recommend college students get at least 8 hours of sleep per night. You collect a random sample of 155 students at your college and ask how many hours of sleep they got last night. The sample mean amount of sleep last night was 7.9 hours, with a sample standard deviation of 2.1 hours. The sample distribution of hours of sleep was slightly skewed right. Does this provide evidence that students at your college are getting less than the recommended amount of sleep per night?

Use the sample results to estimate the standard error of the sampling distribution of sample means. Round to three decimal places.