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QUESTION 1 . on this page. STATISTICS SECTION II . Total Time—1 hour and 30 minutes . 6 Questions . Part A Suggested Time—1 hour and 5 minutes 5 Questions . Directions: Show all your work. Indicate clearly the methods you use, because you will be scored on the correctnessIn Section 8.1, we estimated the “mystery mean” µ (see page 468) by constructing a confidence interval using the sample mean = 240.79. Mean To calculate a 95% confidence interval for µ, we use the familiar formula: estimate ± (critical value) • (standard deviation of statistic) One x r z* V n 240.79 r 1.96 20 16 240.79 r 9.8 (230.99 ...Breathing frequency measures were made for each subject for each chamber. The subjects were exposed to the breathing chambers in random sequence. The data give the breathing frequency, in number of breaths taken per minute. Make a one-sided test of the hypothesis that mean breathing frequency is the same for the two environments.In Section 8.1, we estimated the “mystery mean” µ (see page 468) by constructing a confidence interval using the sample mean = 240.79. Mean To calculate a 95% confidence interval for µ, we use the familiar formula: estimate ± (critical value) • (standard deviation of statistic) One x r z* V n 240.79 r 1.96 20 16 240.79 r 9.8 (230.99 ... n-1. A t distribution with a bigger sample size has _______ variability in the tails. less. Procedures that are not strongly affected when a condition for using them is violated are called ______. robust.REVIEW Chapter 8 & 9 AP Statistics Name: KEY 1. ... For questions 15-17: In a test for ESP (extrasensory perception), the experimenter looks at cards that5) A supermarket claims that their checkout scanners correctly price 99.8% of the items sold. How many items would you expect to buy, on average, to find one that scans incorrectly? 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