QUESTION 3 Multiple-Choice) A sample of 20 items provides a sample standard deviation of 6. Compute the 90%, confidence interval estimate of the population varia OA 7.7911 32 521.5783 O B. Cannot be computed or none of the above. O C. 9.3616 50 2 5 24 3272 D. 22 6911 3 02 = 67 6090 OF. 26.6679 s q 2 s 89.1462 OF. 27 6603 so 2 5 78.4138 QUESTION 4 Multiple-Choice) Given that F is an F random variable (with degrees of freedom 4 and 8), compute the following probability; P(F > $.05)- A. 10 B. 0.OS C. 0:025 D. 0.01 E. 0.1 F. 0.0 UESTION 5