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Citrus2011 [14]
3 years ago
10

If the monthly electrical utility bills of all customers for the Far East Power and Light Company are known to be distributed as

a normal distribution with mean equal to $87.00 a month and standard deviation of $36.00, which of the following would be the largest individual customer bill that you might expect to find?A) About $195.00B) Approximately $811.00C) Nearly $123.00D) There is no way to determine this without more information
Mathematics
1 answer:
Y_Kistochka [10]3 years ago
4 0

Answer:

A) About $195.00

Step-by-step explanation:

In a normal distribution, the interval (mean - 3*standard deviation, mean + 3*standard deviation) account for about 99.7% of the values. In this case mean + 3*standard deviation = $87.00 + 3*$36.00 = $195.00. So, it 's expected that this amount of money would be the largest individual customer bill.

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