# Question: Explain how each of the following changes as the number

Explain how each of the following changes as the number of degrees of freedom describing a t curve increases:

a. The standard deviation of the t curve.

b. The points tα and tα/2.

a. The standard deviation of the t curve.

b. The points tα and tα/2.

**View Solution:**## Answer to relevant Questions

Using Table A. 4 (page 608), find t.100, t .025, and t.001 based on 11 degrees of freedom. Also, find these t points based on 6 degrees of freedom. A production supervisor at a major chemical company wishes to determine whether a new catalyst, catalyst XA-100, increases the mean hourly yield of a chemical process beyond the current mean hourly yield, which is known to ...Referring to Exercise 8.11a, assume that the population standard deviation equals 33. How large a random sample of public owner-controlled companies is needed to make us? In exercise Suppose that a random sample of 100 ...In each of the following cases, determine whether the sample size n is large enough to use the large sample formula presented in the box on page 311 to compute a confidence interval for p. a. p̂ = .1, n = 30 b. p̂ = .1, ...Consider Exercise 8.39 and suppose we wish to find the sample size n needed in order to be 95 percent confident that the sample proportion of respondents who said they took part in some sort of daily activity to keep ...Post your question