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19-12-2022
Mathematics

Answered

A television station claims that the amount of advertising per hour of broadcast time has an average of 15 minutes and a standard deviation equal to 1.2 minutes. You watch the station for 1â hour, at a randomly selectedâ time, and carefully observe that the amount of advertising time is equal to 17 minutes. Calculate theâ z-score for this amount of advertising time. A. zequalsnegative 1.05 B. zequals1.05 C. zequals1.67 D. zequalsnegative 1.67

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