Suppose the monthly charges for cell phone plans are normally distributed with mean μ=$69 and standard deviation σ=$17. (a) Draw a normal curve with the parameters labeled. (b) Shade the region that represents the proportion of plans that charge less than $52. (c) Suppose the area under the normal curve to the left of X=$52 is 0.1587. Provide an interpretation of this result.
Suppose the monthly charges for cell phone plans are normally distributed with mean μ=$69 and standard deviation σ=$17. (a) Draw a normal curve with the parameters labeled. (b) Shade the region that represents the proportion of plans that charge less than $52. (c) Suppose the area under the normal curve to the left of X=$52 is 0.1587. Provide an interpretation of this result.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 31PPS
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Suppose the monthly charges for cell phone plans are normally distributed with mean μ=$69 and standard deviation σ=$17.
(a) Draw a normal curve with the parameters labeled.
(b) Shade the region that represents the proportion of plans that charge less than $52.
(c) Suppose the area under the normal curve to the left of X=$52 is 0.1587. Provide an interpretation of this result.
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