Course Solutions Uncategorized (Answered) : Q6 Scores Boys 16 Years Age Certain Aptitude Test Follow Normal Distribution Mean 70 Stand Q28826038

(Answered) : Q6 Scores Boys 16 Years Age Certain Aptitude Test Follow Normal Distribution Mean 70 Stand Q28826038

Q6. The scores of boys of 16 years of age in a certain aptitude test follow a normal distribution with mean 70 and standard deviation 3. The scores of boys of 15 years of age in the same test follow a normal distribution with mean 63 and standard deviation 4 (a) A boy is selected at random from each group. Define the score of the random variable W to be the score of the 16-yr-old boy (X minus the score of the (i) State the distribution of W, giving the values of the mean and variance. (ii) What 

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