Question 4: Probability and StatisticsUseful 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 Probability0.610.220.130.118.Calculate the standard deviation of X. Please write down the formula. You may useExcel.19.According to a survey of advanced curriculum high school students, the average timespent studying each day is 5 hours. Assume the standard deviation is 0.8 hours and that theprobability distribution is normal.

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Useful formulas: P(AUB) = P(A) + P(B) – P(AN B) P(A) = P(AN B) + 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?

Useful formulas: P(AUB) = P(A) + P(B) – P(AN B) P(A) = P(AN B) + 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?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 26PPS

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