Answer the following questions concerning the descriptive statistics listed belo

Question

Answer the following questions concerning the descriptive statistics listed below. These descriptive statistics were generated from a random sample of all USF students and contain information about the amount of time they exercise per week and the amount of student loan debt (in thousands of dollars) they expect upon graduating college. Exercise Debt 200 200 Lo 95% CI 6.6061 11.380 7.5000 14.385 Up 95% CI 8.4639 17.390 6.0000 19.307 SD Minimum 0.0000 0.0000 Maximum 47000 100.00 in addition to needing a random sample, what other assumption is necessary for the interval to be valid? The of exercise times needs to be a The samp No o

Explanation / Answer

Ans:

1)No other assumptions are needed.

As sample size is sufficiently large(i.e. n>30),so we do not need to assume that population is normally distributed.

According to central limit theorm,when sufficiently large sample size is taken,sampling distribution of sample means follow normal distribution irrespective of the population distribution).

2)last option is correct.

Claim that you are 95% confident that the population mean is less than 17,600.

(as upper limit of 95% confidence interval for mean debt is less than 17,600)

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