THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a stratified random sample of students on a campus,sample members were asked to rate,on a scale of 1 (poor) to 5 (excellent) ,opportunities for improving the college infrastructure.The results are shown in the table below.

-An automobile company with 3500 employees needs to take a simple random sample in order to estimate the employee population's average satisfaction level on a scale of 0-100.From previous experience,it is estimated that the population standard deviation is approximately 8.0.A 95 % confidence interval for the population mean must extend 3.0 on each side of the sample mean.How many employees need to be sampled to achieve this objective?

A) 28
B) 24
C) 42
D) 32