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The probability distribution of X is presented in the following table. X Probability 0.6 1 0.2 0.1 3 0.1 18. Calculate the standard deviation of X. Please write down the formula. You may use Excel.

The probability distribution of X is presented in the following table. X Probability 0.6 1 0.2 0.1 3 0.1 18. Calculate the standard deviation of X. Please write down the formula. You may use Excel.

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question 4: Probability and Statistics Useful formulas: P(AU B) = P(A) + P(B) – P(AN B) P(A) = P(ANB) + P(AN B') 17. Consider the following information about smartphone owners: • 40% of smartphone owners have the Facebook App or the Foodpanda App. • 30% of smartphone owners have the Facebook App. • Having the FaceBook App is independent of having the Foodpanda App. What percent of smartphone owners have the Foodpanda App? The probability distribution of X is presented in the following table. X Probability 0.6 1 0.2 2 0.1 3 0.1 18. Calculate the standard deviation of X. Please write down the formula. You may use Excel. 19. According to a survey of advanced curriculum high school students, the average time spent studying each day is 5 hours. Assume the standard deviation is 0.8 hours and that the probability distribution is normal.
Transcribed Image Text:Question 4: Probability and Statistics Useful formulas: P(AU B) = P(A) + P(B) – P(AN B) P(A) = P(ANB) + P(AN B') 17. Consider the following information about smartphone owners: • 40% of smartphone owners have the Facebook App or the Foodpanda App. • 30% of smartphone owners have the Facebook App. • Having the FaceBook App is independent of having the Foodpanda App. What percent of smartphone owners have the Foodpanda App? The probability distribution of X is presented in the following table. X Probability 0.6 1 0.2 2 0.1 3 0.1 18. Calculate the standard deviation of X. Please write down the formula. You may use Excel. 19. According to a survey of advanced curriculum high school students, the average time spent studying each day is 5 hours. Assume the standard deviation is 0.8 hours and that the probability distribution is normal.
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