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1. What is it about the normal distribution for that allows us to say most samples are more or…

1. What is it about the normal distribution for that allows us to say most samples are more or…

1. What is it about the normal distribution for  that allows us to say most samples are more or less typical of the population as a whole? This is a qualitative question-you should answer it without reference to any numbers or formulas.2. Suppose that n = 240 and p = 0.18. Compute the upper and lower confidence limits of a 90% confidence interval for p(a) exactly;(b) using the worst case estimate of the standard error;(c) using the less conservative estimate of the standard error.(d) Compare the three intervals generated above.(e) Why is the word “exact” not really valid in referring to our “exact formula for the endpoints of a confidence interval”?