The table below is a tabulation of opinions of employees of Axolotl Corporation,who were sampled at random from pay records and asked to complete an anonymous job satisfaction survey,with the results shown below. Assuming independence,the expected frequency of satisfied hourly employees is
A)80
B)90
C)75
D)60

Question

The table below is a tabulation of opinions of employees of Axolotl Corporation,who were sampled at random from pay records and asked to complete an anonymous job satisfaction survey,with the results shown below.  Assuming independence,the expected frequency of satisfied hourly employees is
A)80 
B)90 
C)75 
D)60

Quizplus · Accepted Answer

To find the expected frequency of satisfied hourly employees, we need to multiply the total number of hourly employees (180) by the proportion of employees who are satisfied (0.50). 
Expected frequency = 180 x 0.50 = 90. 
Therefore, the best choice is B.

The Table Below Is a Tabulation of Opinions of Employees