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Mathematics, 29.04.2021 22:30 IntellTanito

A radio station claims that the amount of advertising per hour of broadcast time has an average of 15
minutes and a standard deviation equal to 1.6 minutes.
You listen to the radio station foſ 1 hour, at a randomly
selected time, and carefully observe that the amount
of advertising time is equal to 8 minutes. Calculate the
Z-score for this amount of advertising time.

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