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(WMM11 9.79) The following data represent the running times of films produced by two motion- picture companies. Company Time (minutes) 103 94 110 87 98

(WMM11 9.79) The following data represent the running times of films produced by two motion- picture companies. Company Time (minutes) 103 94 110 87 98 II 97 82 123 92 175 88 118 5. Assuming that the running-times from each company are approximately normally distributed, construct a 90% confidence interval for of /o

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