Question

1. In a study of academic procrastination, it was determined that for a random sample of 16 undergrad students at a mid-size public university, the mean time spent studying for the final quiz in an intro statistics course was 7.74 hours with a standard deviation of 3.40 hours. Suppose we wish to compute a 95% confidence interval for the mean time spent studying for the intro statistics final quiz by all students. The margin of error for this confidence interval would then be calculated using the critical value (c) from question 5 as:

A. C*0.85

B. C*3.4

C. C*0.2125

2. A random sample of 516 U.S. businesses found that 144 of the 516 businesses had fired workers for misuse of the Internet.

The point estimate of the proportion of U.S. businesses who have fired workers for misuse of the Internet is ___

(Round your estimate to 2 decimal places)

Blank 1:

3. A random sample of 516 U.S. businesses found that 144 of the 516 businesses had fired workers for misuse of the Internet. A 90% confidence interval for the proportion of all U.S. businesses who have fired workers for misuse of the Internet is between __ and __

Blank 1:

Blank 2:

Answer 1

For Further queries, please comment Below.

Thank you.