score: 0.35 ol 1 pt mplete) HW Score: 17.957o, 2.35 7.1.31 Question Help Suppose the monthly charges for cell phone plans are normally distributed with mean µ = $56 and standard deviation o= $18. (a)...

Extracted text: score: 0.35 ol 1 pt mplete) HW Score: 17.957o, 2.35 7.1.31 Question Help Suppose the monthly charges for cell phone plans are normally distributed with mean µ = $56 and standard deviation o= $18. (a) Draw a normal curve with the parameters labeled. (b) Shade the region that represents the proportion of plans that charge less than $38. (c) Suppose the area under the normal curve to the left of X = $38 is 0.1587. Provide an interpretation of this result. X X 20 38 56 20 56 92 38 56 74 56 74 92 (b) Choose the correct graph below. A. O B. OD. 38- 38 X 56 74 92 20 38 56 38 56 74 20 56 92 (c) Select the correct choice below and fill in the answer box to complete your choice. (Type a whole number.) O A. The probability is 0.1587 that a randomly selected cell phone plan in this population is less than $ per month. O B. The probability is 0.1587 that a randomly selected cell phone plan in this population is more than $ per month.