In a Study of Factors Affecting Job Satisfaction,320 Employed Individuals

Multiple Choice

In a study of factors affecting job satisfaction,320 employed individuals were measured for an index of satisfaction and the sample mean was 28.8 and the sample standard deviation was 7.3.Following,the 98% confidence interval for the population mean would be _____.

A) [27.85,29.75]
B) [27.96,29.64]
C) [11.82,45.78]
D) [28.75,28.85]
E) [28.60,29.00]