Stats Solutions

(Steps Shown) Data on salaries of public school classroom teachers collected by the National Survey on Salaries and Wages in Public Schools report a mean annual

Question: Data on salaries of public school classroom teachers collected by the National Survey on Salaries and Wages in Public Schools report a mean annual salary of $45,871. Assume a standard deviation of $9200. Determine the mean and standard deviation of the sampling distribution of the mean for a sample size n = 225.

  1. Mean of the sampling distribution:_____________________________
  2. Standard deviation of sampling distribution:________________________
  3. What is the percentage of all samples of size 225 that have an average salary greater than $47,000? [HINT: Draw normal distribution, shade the area of interest and identify area under the curve]

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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