An admissions officer has determined that the population of applicants to the mba program has undergraduate gpa’s that are approximately normally distributed with standard deviation 0.45. a random sample of 25 applicants for next fall has a sample mean gpa of 3.30. find the 95% confidence interval for the mean gpa among applicants to this mba.

Step-by-step explanation:

(a) Given : Sample size : , which is less than 30 so we use t-test.

Sample mean :

Standard deviation :

Significance level :

Critical value :

The confidence interval for population mean is given by :-

Hence, the 95% confidence interval for the mean GPA among applicants to this MBA =

step-by-step explanation:

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