2) Suppose that x has a normal distribution with o = 3. a) Find the minimal sample size required so that for a 90% confidence interval, the maximal margin of error is E = 0.5. Wee date Tevai c= b) Based on the sample size and the x distribution, can we assume that the x distribution is approximately normal? Explain.

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A: A normal distribution is the one which has same mean, median and mode.