# Question

The mean of a population of raw scores is 33 (σx = 12). Use the criterion of .05 and the upper tail of the sampling distribution to test whether a sample with X = 36.8 (N = 30) represents this population.

(a) What is the critical value?

(b) Is the sample in the region of rejection? How do you know?

(c) What does this indicate about the likelihood of this sample occurring in this population?

(d) What should we conclude about the sample?

(a) What is the critical value?

(b) Is the sample in the region of rejection? How do you know?

(c) What does this indicate about the likelihood of this sample occurring in this population?

(d) What should we conclude about the sample?

## Answer to relevant Questions

We obtain a X = 46.8 (N = 15) which may represent the population where µ = 50 (σx = 11). Using the criterion of .05 and the lower tail of the sampling distribution: (a) What is our critical value? (b) Is this sample in the ...In a study you obtain the following data representing the aggressive tendencies of some football players: 40 30 39 40 41 39 31 28 33 (a) Researchers have found that in the population of non-football players, µ is 30 (σx = ...(a) When are events independent? (b) When are they dependent? We ask whether attending a private school leads to higher or lower performance on a test of social skills. A sample of 100 students from a private school produces a mean of 71.30 on the test, and the national mean for ...(a) Summarize your sample data. (b) Is this a one-tailed or two-tailed test? Why? (c) What are H0 and Ha? (d) Compute zobt. (e) With a = .05, what is zcrit? (f) What should we conclude about the relationship here? (Chs. 4, ...Post your question

0