Question

he human resources department of a consulting firm gives a standard creativity test to a randomly selected group of new hires every year. This year, 80 new hires took the test and scored a mean of 112.6 points with a standard deviation of 16.5 . Last year, 60 new hires took the test and scored a mean of 117.4 points with a standard deviation of 17.7 Assume that the population standard deviations of the test scores of all new hires in the current year and the test scores of all new hires last year can be estimated by the sample standard deviations, as the samples used were quite large. Construct a 95 % confidence interval for the lower and upper limits

Answer 1

दम है तो बताओ कि इस फोटो में कितने लोग हैं