Question: Let X = tips earned by a pizza delivery person in a day. X follows a normal distribution with a mean of $75 and a

Let X = tips earned by a pizza delivery person in a day. Xfollows a normal distribution with a mean of $75 and a variance of $625.If a delivery person earns $88, how many standard deviations are their earnings away from the mean?If a delivery person earns

Let X = tips earned by a pizza delivery person in a day. Xfollows a normal distribution with a mean of $75 and a variance of $625.
1. If a delivery person earns $88, how many standard deviations are their earnings away from the mean?
2. If a delivery person earns $75, how many standard deviations are their earnings away from the mean?
3. Calculate the following probabilities:

P(20 120P(70

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