Mathematics, 27.06.2019 17:10, xjdjsisi

Aradio station claims that the amount of advertising per hour of broadcast time has an average of 10 minutes and a standard deviation equal to 5 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 8.2 minutes. calculate the z-score for this amount of advertising time. round your answer to 2 decimal places.

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Aradio station claims that the amount of advertising per hour of broadcast time has an average of 10...