A radio station claims that the amount of advertising each hour has an a mean of 15 minutes and a standard deviation of 2.9 minutes. You listen to the radio station for 1 hour and observe that the amount of advertising time is 11.23 minutes. Based on your observation, what would you infer about the radio station's claim?
What will be an ideal response?
The z-score for the value 11.23 is -1.3
Since the z-score would not indicate that 11.23 minutes represents an outlier, there is no evidence that the station's claim is incorrect.
Business
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