TABLE 7-1 Times Spent Studying by Students in the Week Before Final

question 320

Short Answer

TABLE 7-1
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students. Use the finite population correction.
-Referring to Table 7-1, what is the probability that the sample mean exceeds the population mean by more than 2 hours?

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Definitions:

Standard Factory Overhead Rate

A predetermined rate used to assign manufacturing overhead costs to individual units of output on a consistent basis.

Normal Capacity

The average operating capacity a company can sustain under normal circumstances, taking into account seasonal and cyclical demand fluctuations.

Direct Labor Hour

The amount of time spent by employees directly working on producing goods or services.

Direct Labor Rate Variance

The difference between the actual cost of direct labor and the expected (or standard) cost, used to manage labor costs more effectively.