a) The standard deviations of both populations are known, so use the z statistic; the significance level is given as 0.04, as this is a two-tailed test, the rejection region of 0.04/2 = 0.02 falls equally on the right and left tails of the distribution; find (1 which the total area -0.04 which is the rejection region = 0.96), 0.96/2 = 0.48 in the z table, read off the corresponding z value (the z critical value is + z and -z as this is a two tailed test and the rejection region falls equally on the right and left tails of the distribution) b) Calculate z (use the formula 11-2 on page 313 in the text) c) Compare the z critical value and the z calculated value to take a decision regarding Ho

a) The standard deviations of both populations are known, so use the z statistic; the significance level is given as 0.04, as this is a two-tailed test, the rejection region of 0.04/2 = 0.02 falls equally on the right and left tails of the distribution; find (1 which the total area -0.04 which is the rejection region = 0.96), 0.96/2 = 0.48 in the z table, read off the corresponding z value (the z critical value is + z and -z as this is a two tailed test and the rejection region falls equally on the right and left tails of the distribution) b) Calculate z (use the formula 11-2 on page 313 in the text) c) Compare the z critical value and the z calculated value to take a decision regarding Ho

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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