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Construct 90% and 99% confidence intervals for the population mean temperature of coffee sold in Example 2.
a. Find tc and E for each level of confidence.
b. Use and E to find the left and right endpoints of each confidence interval.
c. Interpret the results.
Example 2
You randomly select 16 coffee shops and measure the temperature of the coffee sold at each. The sample mean temperature is 162.0°F with a sample standard deviation of 10.0°F. Construct a 95% confidence interval for the population mean temperature of coffee sold. Assume the temperatures are approximately normally distributed. |
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