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On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day. 50 75 100 Total .49 .20 .18 1.00 25 P(X) .13 (a) Calculate the expected value and standard deviation of this random variable X. (Round your answers to 2 decimal places.) Expected value Standard deviation (b) Describe the shape of this distribution. Skewed to the right Skewed to the left. Symmetric

On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day. 50 75 100 Total .49 .20 .18 1.00 25 P(X) .13 (a) Calculate the expected value and standard deviation of this random variable X. (Round your answers to 2 decimal places.) Expected value Standard deviation (b) Describe the shape of this distribution. Skewed to the right Skewed to the left. Symmetric

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day. X 25 50 75 100 Total P(x) 13 .49 .201 .18 1.00 (a) Calculate the expected value and standard deviation of this random variable X. (Round your answers to 2 decimal places.) Expected value Standard deviation (b) Describe the shape of this distribution. Skewed to the right Skewed to the left. Symmetric
Transcribed Image Text:On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day. X 25 50 75 100 Total P(x) 13 .49 .201 .18 1.00 (a) Calculate the expected value and standard deviation of this random variable X. (Round your answers to 2 decimal places.) Expected value Standard deviation (b) Describe the shape of this distribution. Skewed to the right Skewed to the left. Symmetric
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