To test the effectiveness of a treatment, a sample of N = 36 is selected from a normal population with a mean of μ = 60 and a standard deviation of \sigma = 10. The mean for the sample is M = 55. We want to test whether the treatment had an effect on scores. a. Using symbols, state the hypotheses (H0 and H1) for a two-tailed test. b. Identify the decision criteria (critical values) for \alpha = .05, 2-tailed on the distribution below, using lines or arrows. c. Calculate the test statistic (z) for the sample. d. Make a decision regarding the hypothesis based on the results and write a conclusion sentence summarizing the results of the research.

To test the effectiveness of a treatment, a sample of N = 36 is selected from a normal population with a mean of μ = 60 and a standard deviation of \sigma = 10. The mean for the sample is M = 55. We want to test whether the treatment had an effect on scores. a. Using symbols, state the hypotheses (H0 and H1) for a two-tailed test. b. Identify the decision criteria (critical values) for \alpha = .05, 2-tailed on the distribution below, using lines or arrows. c. Calculate the test statistic (z) for the sample. d. Make a decision regarding the hypothesis based on the results and write a conclusion sentence summarizing the results of the research.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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