Instruction 6.4 The Manager of a Surveying Company Believes That the Average

question 135

Short Answer

Instruction 6.4
The manager of a surveying company believes that the average number of phone surveys completed per hour by her employees has a normal distribution. She takes a sample of 15 days' output from her employees and determines the average number of surveys per hour on these days. The ordered array for this data is: 10.0, 10.1, 10.3, 10.5, 10.7, 11.2, 11.4, 11.5, 11.7, 11.8, 11.8, 12.0, 12.2, 12.2, 12.5.
-Referring to Instruction 6.4,the fourth standard normal quantile is_______

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Definitions:

Marginal Tax Rate

The rate at which an additional dollar of income is taxed, representing the percentage of tax applied to the last dollar earned.

Tax-Free

Tax-free describes goods, transactions, or income that are not subject to taxation by the government.

Taxed

Subjected to a financial charge or levy by a government on income, goods, or activities.

Progressive Tax

A tax system in which the tax rate increases as the taxable amount increases, resulting in those who have higher incomes being taxed at a higher rate.