1. Complete Problems 19 and 20 on page 242 of your textbook. Interpret the results of each interval in context. For each question, just use the Confidence Intervals Template.
2. A survey of 23 individuals found that they spent an average of $35.21 on exercise attire for the summer. The margin of error for a 95% confidence interval was found to be $7.50. What are the lower and upper limits of the confidence interval? Explain how you found your answers.
3. A confidence interval for the population mean was constructed and found to be (35.6, 59.4).
a. What is the margin of error? Explain how you found your answer.
b. What is the point estimate of the interval? Explain how you found your answer.
"3)
CI = (35.6, 59.4)
lower limit = mean - ME
Upper limit = mean + ME
That is,
35.6 = mean - ME …(1)
59.4 = mean + ME …(2)"
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