Question

A company seeks to employ a new public relations manager. The hiring committee surveys 8 public relations managers and finds the average salary is $97459.666 with standard deviation of $1441.3964. What is the 95% confidence interval for the true average public relations manager salary?

Question 2 options:

1)	( 96254.628 , 98664.704 )

2)	( 97457.301 , 97462.031 )

3)	( 96284.504 , 98634.828 )

4)	( -96254.628 , 98664.704 )

5)	( 96950.055 , 97969.277 )

Suppose you want to determine the average height of college basketball players in NCAA Division I. In a random sample of 12 players, the sample average is 73.934 inches with a standard deviation of 3.7795 inches. What is the 90% confidence interval for the average height of all NCAA D-I players?

Question 3 options:

1)	( 72.138 , 75.73 )

2)	( 71.975 , 75.893 )

3)	( 72.843 , 75.025 )

4)	( 71.99 , 75.878 )

5)	( -71.975 , 75.893 )

Answer 1