A Study Was Conducted to Determine If the Salaries of Elementary

question 39

Essay

A study was conducted to determine if the salaries of elementary school teachers from two neighboring
districts were equal. A sample of 15 teachers from each district was randomly selected. The mean from the first
district was $28,900 with a standard deviation of $2300. The mean from the second district was $30,300 with a
standard deviation of $2100. Test the claim that the salaries from both districts are equal. Assume the samples
are random and independent, and the populations are normally distributed. Also, assume that $\sigma _ { 1 } ^ { 2 } = \sigma_ { 2 } ^{ 2 }$ Use $\alpha = 0.05 \text {. }$

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Definitions:

Promotional Strategy

A plan designed to communicate product benefits and convince potential customers to buy.

Supply Chain

The sequence of processes involved in the production and distribution of a commodity.

Advertising Advantage

The benefit or edge gained by a company through unique or effective advertising strategies that enhance brand recognition or consumer engagement.

Cost Efficiency

The ability to achieve the desired outcome or production level at the lowest possible cost.