Complete the below:
Q1: A local university administers a comprehensive examination to the candidates for B.S. degrees in Business Administration. Five examinations are selected at random and scored. The scores are shown below.
Grades
80
90
91
62
77
Overall performance for all candidates of a B.S. degree. The population is therefore the theoretical distribution of their scores. Call the population mean μ. Compute a point estimate for μ - this is your best guess on the average performance for all candidates. Mean or μ is 80
What is a 95% confidence interval (interval estimate) for μ.
a. P[90.32 < μ<69.68] = .95
b. P[90.32 < μ<69.68] = .05
c. P[85.32 < μ<75.32] = .95
d. P[85.32 < μ<75.32] = .05
Q2. For confidence intervals (two tailed), the critical value of Z at 99.2% confidence (or the .008 significance) is
a. 2.65
b. 2.44
c. 2.41
d. 1.645