Question: Construct and interpret a 95% condence interval about M - W using the data from Problem 8. How might a marketing executive with McDonalds use

Construct and interpret a 95% conï¬dence interval about µM - µW using the data from Problem 8. How might a marketing executive with McDonald€™s use this information?

Wait Time at McDonald's Drive-Through (seconds) 111.84 137.90 121.21 100.04 116.72 81.43 Wait Time at Wendy's Drive-Through (seconds) 204.29 190.91 171.01 270.82 385.90 151.09 191.60 141.78 122.06 140.44 115.66 227.38 126.91 127.35 122.62 126.62 147.28 131.21 195.44 101.03 71.37 131.69 86.31 128.75 246.59 95.09 153.34 100.94 156.34 281.90 187.53 196.84 284.48 123.66 203.62 71.02 199.86 233.65 363.34 174.43 119.61 128.59 110.55 182.54 390.50 386.71 133.56 110.64 183.79 471.62 155.53

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From problem 9 we have x McD 133601 s McD 396110 n McD 30 x W 2191444 s ... View full answer

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