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# Margin of Error

## 15 questions

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• 1. Multiple Choice
15 minutes
1 pt

For a class project, a student in a statistics class surveys the monthly rent for 32 unfurnished one-bedroom apartments in Boston and finds the mean monthly rent to be \$1400 with a standard deviation of \$220.

Find the margin of error for the sample mean. (assuming 95% confidence) Round to the nearest hundredth

\$77.78

\$4.31

\$188.78

\$494.97

• 2. Multiple Choice
15 minutes
1 pt

For a class project, a student in a statistics class surveys the monthly rent for 32 unfurnished one-bedroom apartments in Boston and finds the mean monthly rent to be \$1400 with a standard deviation of \$220.

Find the 95% confidence interval for the population mean Round to the nearest hundredth

[1322.22, 1477.78]

[1395.69, 1404.31]

[1211.22, 1588.78]

[905.03, 1894.97]

• 3. Multiple Choice
15 minutes
1 pt

A random sample of 45 life insurance policy holders showed that the average premiums paid on their life insurance policies was \$340 per year with a standard deviation of \$62. Construct a 95% confidence interval for the population mean. Round to the nearest hundredth

[321.52, 358.48]

[238.63, 441.37]

[253.64, 426.36]

[328.57, 351.43]