##### Question

In: Statistics and Probability

# Salaries for teachers in a particular elementary school district are normally distributed with a mean of...

Salaries for teachers in a particular elementary school district are normally distributed with a mean of $41,000 and a standard deviation of$6,100. We randomly survey ten teachers from that district.

A. Give the distribution of ΣX. (Round your answers to two decimal places.)

ΣX - N ( , )

##### A researcher claims that the mean of the salaries of elementary school teachers is greater than...
A researcher claims that the mean of the salaries of elementary school teachers is greater than the mean of the salaries of secondary school teachers in a large school district. The mean of the salaries of a random sample of 26 elementary school teachers is $48,250 and the sample standard deviation is$3900. The mean of the salaries of 24 randomly selected secondary school teachers is $45,630 with a sample standard deviation of$5530. At ? = 0.05, can it...
##### A study was conducted to estimate the difference in the mean salaries of elementary school teachers...
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##### A researcher claims that the variation in the salaries of elementary school teachers is greater than...
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