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Suppose that you are testing the hypotheses Ho: = 19 vs. HA: > 19. A...

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Basic Math

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Suppose that you are testing the hypotheses Ho: = 19 vs. HA: > 19. A sample of size 25 results in a sample mean of 18.5 and a sample standard deviation of 1.5.a) What is the standard error of the mean?b) What is the critical value of t for a 90% confidence interval?c) Construct a 90% confidence interval for ?.d) Based on the confidence interval, at a = 0.05 can you reject Ho? Explain.a) The standard error of the mean is 3b) The critical value is t

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