The Amount of Jen's Monthly Phone Bill Is Normally Distributed

question 105

Multiple Choice

The amount of Jen's monthly phone bill is normally distributed with a mean of $55 and a standard deviation of $8.Draw and label the Normal model for Jen's monthly phone bill.In what interval would you expect the central 68% of bills to be found?

• A) ; $31 to $79
• B) ; $39 to $71
• C) ; $47 to $71
• D) ; $47 to $63
• E) ; $39 to $63