Question: The average U.S. monthly cable bill in 2016 has been reported to be $103. Assume monthly cable bills follow a normal distribution with a standard

The average U.S. monthly cable bill in 2016 has been reported to be $103. Assume monthly cable bills follow a normal distribution with a standard deviation of $9.50.

a. What is the probability that a randomly selected bill will be

1. less than $100?

2. less than $110?

3. exactly $105?

4. between $95 and $105?

b. Use Excel to confirm the answers in part a.

c. Which monthly cable bill represents the 75th percentile?

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a 1 2 3 Px 105 0 4 P95 x 105 P084 z 021 05832 02005 03827 b 1 NORMDIST100 103 95 TRUE 037... View full answer

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