# Question

What are the parameters of a normal distribution and a t distribution? Explain.

## Answer to relevant Questions

Briefly explain the meaning of the degrees of freedom for a t distribution. Give one example. For each of the following, find the area in the appropriate tail of the t distribution. a. t = 2.467 and df = 28 b. t = –1.672 and df = 58 c. t = –2.670 and n = 55 d. t = 2.819 and n = 23 Suppose, for a sample selected from a population, = 25.5 and s = 4.9. a. Construct a 95% confidence interval for µ assuming n = 47. b. Construct a 99% confidence interval for µ assuming n = 47. Is the width of the 99% ...The high price of medicines is a source of major expense for those seniors in the United States who have to pay for these medicines themselves. A random sample of 2000 seniors who pay for their medicines showed that they ...A random sample of 34 participants in a Zumba dance class had their heart rates measured before and after a moderate 10-minute workout. The following data correspond to the increase in each individual’s heart rate (in ...Post your question

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