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d) Using a significance level of 0.05, assess whether Gender and Mobile OS preference are independent. Show your working and steps clearly. e) Determine a 95% confidence interval for the proportion of mobile users who are Female

d) Using a significance level of 0.05, assess whether Gender and Mobile OS preference are independent. Show your working and steps clearly. e) Determine a 95% confidence interval for the proportion of mobile users who are Female

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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Do question d) and e) only. 

A marketing research company has been engaged by a mobile app development company to conduct a survey on the mobile Operation System (OS) preference of Male and Female mobile users. A survey was conducted on 500 randomly selected mobile users and following is the result: Mobile OS Robot Gender Male Female iOX 134 Wins 80 45 63 128 50 Assume the survey result is a good representation of the population. A user is randomly selected from the population. Calculate, leaving your answers as fractions: a) The probability that a randomly selected mobile user is a female and prefers iOX. b) The probability that a randomly selected mobile user who prefers either iOX or Wins is a female. c) The probability that a male mobile user prefers either Robot or Wins. d) Using a significance level of 0.05, assess whether Gender and Mobile OS preference are independent. Show your working and steps clearly. e) Determine a 95% confidence interval for the proportion of mobile users who are Female
Transcribed Image Text:A marketing research company has been engaged by a mobile app development company to conduct a survey on the mobile Operation System (OS) preference of Male and Female mobile users. A survey was conducted on 500 randomly selected mobile users and following is the result: Mobile OS Robot Gender Male Female iOX 134 Wins 80 45 63 128 50 Assume the survey result is a good representation of the population. A user is randomly selected from the population. Calculate, leaving your answers as fractions: a) The probability that a randomly selected mobile user is a female and prefers iOX. b) The probability that a randomly selected mobile user who prefers either iOX or Wins is a female. c) The probability that a male mobile user prefers either Robot or Wins. d) Using a significance level of 0.05, assess whether Gender and Mobile OS preference are independent. Show your working and steps clearly. e) Determine a 95% confidence interval for the proportion of mobile users who are Female
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