The reading score is often reported, after scaling, as a value Y which is normally distributed, with mean 100 and standard deviation 15. Values of Y are usually given to the nearest integer. (iv) Find the probability that a randomly chosen eight-year-old gets a score, after scaling, of 103. (v) What range of Y scores would you expect to be attained by the best 20% ´of readers?

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A: Confidence interval =95% sample size [n] =46

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