Question

please answer all parts

Suppose the monthly charges for ool phone plans are normaly distributed with mean μ-$66 and standard deviation at$17 (a) Draw a normal curve with the parameters labeled (b) Shade the region that represents the proportion of plans that charge less than $49 (c) Suppose the area under the normal curve to the left of X $49 is 0.1587. Provide an interpretation of this result. (a) Choose the correct graph below ов. O C. O D. 49 66 83 32 66 100 66 83 100 32 49 66 (b) Choose the correct graph below Ο A. о в. c. O D. 49 Click to select and enter your answer(s Suppose the monthly charges for oil phone plans are normally distributed with mean μ-S00 and standard deviation σ-S17 (a) Draw a normal curve with the paramoters labeled (b) Shade the region that represents the proportion of plans that charge less than $49. (c) Suppose the area under the normal curve to the left of X $49 is 0.1587. Provide an interpretation of this resuilt 32 66 100 66 83 100 32 49 66 49 66 83 (b) Choose the correct graph below O A. O B Ос. O D. 49 32 66 100 32 49 66 49 66 83 66 83 100 (e) 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 more than S per month. O B. The probability is 0.1587 that a randomly selected cell phone plan in this population is less than $ per month. lick to select and enter your answer(s).

Answer 1

a)

O A 49 66 83

b)

O D. 49 66 83

c) B. The probability is 0.1587 that a randomly selected cell phone plan in this population is less than $49 per month