Apply the​ 68-95-99.7 rule to answer the question.   The amount of​ Jen's monthly phone bill is normally distributed with a mean of ​$67 and a standard deviation of ​$11. What percentage of her phone bills are between ​$34 and ​$100​?       Question content area bottom Part 1   A. ​95%   B. ​68%   C. ​99.9%   D. ​99.7%

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Apply the​ 68-95-99.7 rule to answer the question.
 
The amount of​ Jen's monthly phone bill is normally distributed with a mean of
​$67
and a standard deviation of
​$11.
What percentage of her phone bills are between
​$34
and
​$100​?
 
 
 

Question content area bottom

Part 1
 
A.
​95%
 
B.
​68%
 
C.
​99.9%
 
D.
​99.7%
 
Expert Solution
Step 1

Given that the amount of​ Jen's monthly phone bill is normally distributed with a mean of $67 and a standard deviation of ​$11. So, μ=67 and σ=11.

 

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