Mathematics, 05.11.2020 01:00 juansoto227711

A radio station claims that the amount of advertising per hour of broadcast time has an average of 17 minutes and a standard deviation equal to 2.2 minutes. You listen to the radio station for 1 hour, at a randomly selected time, and carefully observe that the amount of advertising time is equal to 15 minutes. Calculate the z-score for this amount of advertising time.

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A radio station claims that the amount of advertising per hour of broadcast time has an average of 1...