Question: Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can

Use the standard normal distribution or thet-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can beused, explain why. Interpret the results. In a random sample of 21mortgageinstitutions, the mean interest rate was 3.62% and the standard deviation was 0.44%. Assume the interest rates are normally distributed.

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