The annual salary for a sample of U.S. governors in 2017 are as follows: $120395, $177467, $130273, $139339, $177412, $99636, $150000, $159300, $123427, $108167, $149730, $110834, $105000, $142265, $148886, $98600, $106078, $109470, $160135, $175000, $150000, $105000.   1. Find the mean and the standard deviation for the sample of annual salaries.      2. What is the associated t - score for a 99% confidence level?            3. What is the margin of error for a confidence level of 99%?            4. Find a 99% confidence interval for the mean salary of U.S. governors in 2017. Assume the data is normally distributed.

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  1. The annual salary for a sample of U.S. governors in 2017 are as follows:

$120395, $177467, $130273, $139339, $177412, $99636, $150000, $159300, $123427, $108167, $149730, $110834, $105000, $142265, $148886, $98600, $106078, $109470, $160135, $175000, $150000, $105000.

 

1. Find the mean and the standard deviation for the sample of annual salaries. 

 

 

2. What is the associated t - score for a 99% confidence level? 

 

 

 

 

 

3. What is the margin of error for a confidence level of 99%? 

 

 

 

 

 

4. Find a 99% confidence interval for the mean salary of U.S. governors in 2017. Assume the data is normally distributed. 

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