The Weekly Earnings of Bus Drivers Are Normally Distributed with a Mean

question 48

Short Answer

The weekly earnings of bus drivers are normally distributed with a mean of $395. If only 1.1 percent of the bus drivers have a weekly income of more than $429.35, what is the value of the standard deviation of the weekly earnings of the bus drivers?

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Definitions:

Direct Labor Hours

The cumulative hours expended by workers directly engaged in the manufacturing of products or provision of services.

Static Budget

A budget that remains unchanged regardless of changes in activity levels, sales volume, or other variables during the budget period.

Variable Costs

Costs that vary directly with the level of production or volume of output, which includes expenses like raw materials and labor directly involved in production.

Fixed Costs

Expenses that do not change with changes in production level or sales volume.