Construct 90% and 99% confidence intervals for the population mean temperature of coffee sold in Example 2.
Question:
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 x̅ 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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a df n 1 16 1 15 90 CI t c 1753 E t c s n 1753 10 16 44 99 CI t c 2947 E t c s ...View the full answer
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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