MATH 533 Week 4 Addendum; Homework-Quiz Review Problems
Week 4 – Homework and Quiz Review Problems and Notes NOTE: In addition to these problems, please review the other notes for this week’s lecture. A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35 with a standard deviation of $0.12. Construct a 99% confidence interval to estimate the population mean. (2.30,2.40) Confidence Interval for µ 99% 50 2.35 0.12 t Confidence Level n Mean StDev Use t or z? 0.016971 2.679952 0.045480 2.304520 2.395480 SE t-value Margin of Error Lower Limit Upper Limit A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35. The population standa
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