Let s go to the movies A random sample of 41 Foreign Language movies made...
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Let s go to the movies A random sample of 41 Foreign Language movies made since the year 2000 had a mean length of 112 4 minutes with a standard deviation of 13 4 minutes Part 1 of 2 a Construct a 90 confidence interval for the true mean length of all Foreign Language movies made since 2000 Round the answers to one decimal place A 90 confidence interval for the true mean length of all Foreign Language movies made since 2000 is 108 9 u 115 9 Part 1 2 Part 2 of 2 b As of November 2010 three Spider Man movies have been released and their mean length is 129 minutes Someone claims that the mean length of Spider Man movies is actually less than the mean length of all Foreign Language movies Does the confidence interval contradict this claim The confidence interval Choose one contradict this claim
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