Mathematics, 08.10.2019 03:00 jordanrini

Aradio station claims that the amount of advertising per hour of broadcast time has an average of 17 minutes and a standard deviation equal to 2.7 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 11 minutes. calculate the z-score for this amount of advertising time

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