You would like to determine the mean salaries for New York public school teachers in their...

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Question

You would like to determine the mean salaries for New York public school teachers in their first year. You do this by randomly sampling 20 newly-hired school teachers. The yearly salaries of these teachers have a mean of $39,400 and a standard deviation of $2,800.
1. (a) What is your estimate for the mean salary of a New York public school teacher?
2. (b) What is the standard error for this estimate?
3. (c) What are the degrees of freedom for your estimate of the mean? What are the degrees of freedom for your standard error? (There are two questions here.)
4. (d) Find a 95% confidence interval for your estimate of the mean.

Answer 1

Answer #1

Sa es timal. yor mean ealary lo S仁一 626 ,099 s亡 4Dぞ10-44 s 38039 , 5 for any query, comment

Answer 2

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