asked 11.5k views
5 votes
The Clear Talk cellular company claims that the average monthly cellular bill of each of their customers is $78.85 with a standard deviation of $7.35. Jolie, a Clear Talk cellular customer, has an average monthly cellular bill of $87.35. Given that the data is approximately normal, standardize the value of the cellular bill and find the area under the normal curve above the standardized cellular bill balance.

A.
The area above the standardized cellular bill balance is 1.16.
B.
The area above the standardized cellular bill balance is 0.877.
C.
The area above the standardized cellular bill balance is 0.113.
D.
The area above the standardized cellular bill balance is 0.0548.

asked
User Lajos
by
8.1k points

2 Answers

4 votes
The correct answer is C
answered
User WCC
by
8.1k points
7 votes
I think it would be c
answered
User Mark He
by
7.7k points
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