▪ When the test statistic is in the non-critical region, then the null hypothesis must not be rejected. [ Select ] ▪ When the population standard deviation is known and the sample size is more than 30, Z- test is more appropriate to use for testing hypotheses than t- test. [ Select ] ▪For a two-tailed test, the absolute value of the test statistic is being compared to the absolute value of the critical value to make a decision. [ Select ]

▪ When the test statistic is in the non-critical region, then the null hypothesis must not be rejected. [ Select ] ▪ When the population standard deviation is known and the sample size is more than 30, Z- test is more appropriate to use for testing hypotheses than t- test. [ Select ] ▪For a two-tailed test, the absolute value of the test statistic is being compared to the absolute value of the critical value to make a decision. [ Select ]

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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Suppose that you did a Right-Tailed Test and that the Observed Test Statistic is outside the Critical Region. Which is bigger, the Observed Test Statistic or the Critical Value?
ord ngi 11.-12. ints] Gnu, a snowboarding company, is testing to see if their two most popular snowboards differ in softness. Gnu tests a group of six snowboarders with equal snowboarding abilities who each try Board 1 and Board 2 for three hours each. They are asked to rate them on a softness scale of 1-15. [Assume this is safe to treat as interval data.] You are doing a two- tailed test with a=.10. Calculate the test statistic. State the critical value, and come to a conclusion concerning the snowboards. Board 1 Board 2 9 7 14 12 15 12 8 7 13 8 7 8 bon then the more powerful dependent samples test if carry-over effect
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