question archive The probability that a randomly selected teenage girl will still be using her mobile phone one year after the day she bought it is 0
The probability that a randomly selected teenage girl will still be using her mobile phone one year after the day she bought it is 0
Subject:StatisticsPrice: Bought3
The probability that a randomly selected teenage girl will still be using her mobile phone one year after the day she bought it is 0.63. Suppose we randomly select 6 teenage girls who have just bought a mobile. Assume that the binomial model is valid. 1) Find the probability that half of these 6 girls will still be using their mobile phone one year from the day they bought it. 2) Find the probability that none of these 6 girls will still be using their mobile phone one year from the day they bought it. 3) Find the probability that all of these 6 girls will be using their mobile phones on this day next year. 4) Find the probability that more than half of these 6 girls will be using their mobile phones on this day next year 5) How many of these 6 girls do you expect that they will be using their mobile phones on this day next year?
