Consider a study using a between-groups design with between-groups df = 3 and within-groups df = 4. Given an F ratio of 6.8, the researcher should: a. reject the null hypothesis if alpha is .05 but fail to reject if alpha of .01 b. reject the null hypothesis if alpha is .01 but fail to reject if alpha of .05 c. reject the null for both alpha = .01 or alpha = .05 d. fail to reject the null hyp

Consider a study using a between-groups design with between-groups df = 3 and within-groups df = 4. Given an F ratio of 6.8, the researcher should: a. reject the null hypothesis if alpha is .05 but fail to reject if alpha of .01 b. reject the null hypothesis if alpha is .01 but fail to reject if alpha of .05 c. reject the null for both alpha = .01 or alpha = .05 d. fail to reject the null hyp

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.

Chapter1: Functions

Section1.2: The Least Square Line

Problem 5E

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2) Suppose that we are testing Ho:µ = 4 vs Ha: µ > 4. A p-value of 0.023 was determined. Which of the following is a correct interpretation of this p-value? (a) The null hypothesis would be rejected at a 5% level but not a 1% level. (b) The null hypothesis would be rejected at a 1% level but not a 5% level. (c) The null hypothesis would be rejected at both 5% and 1% levels. (d) The null hypothesis would not be rejected at either the 5% or 1% level.
6. Find p-value for testing Ho: ß1 = 0 and Ha: B1 # 0. Test hypothesis at a = .1,.05, and .01 7. Find p-value for testing Ho: ß2 = 0 and Ha: B2 # 0. Test hypothesis at a = .1,.05, and .01 %3D
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A researcher predicts that scores in treatment A will be higher than scores in treatment B. If the mean for the 10 participants in treatment A is 4 points higher than the mean for the 10 participants in treatment B and the data produced t = 2.095 What decision should be made? Choose one a. With an alpha = .05 reject the null for either a one tail or two tails b. With an alpha = .05 fail to reject the null for either a one tail or two tails c. With an alpha = .05 reject the null for one tail but fail to reject with two tails d. With an alpha = .05 reject the null for two tails but fail to reject for a one tail
In reporting the results of a statistical analysis, a researcher reports that "p = .33". This implies that ________. a. the alternative hypothesis was accepted with an alpha level of .05 b. the alternative hypothesis was not accepted with an alpha level of .05 c. the null hypothesis was not rejected with an alpha level of .05 d. the null hypothesis was rejected with an alpha level of .05
Dr. Ingrid is conducting an experiment to see whether time spent reading is related to poor vision. To do so, she creates three groups and randomly assigns 17 participants to each: the first group reads for 30 min a day, the second group reads for 1hr a day, and the third group reads for 1.5 hrs a day. Dr. Ingrid plans on using a one-way ANOVA to analyze the results of her experiment. If Dr. Ingrid has set alpha to .01, what will be her critical value of F?
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1. Analyze the data as a two way factorial design. Johnson and Leone (Statistics and Experimental Design in Engineering and the Physical Sciences, Wiley, 977) describe an experiment to investigate warping of copper plates. The two factors studied were the temperature and the copper content of the plates. The response variable was a measure of the amount of warping. The data were as follows: Temperature (°C) 50 75 100 125 40 17, 20 12,9 16, 12 21, 17 Copper Content (%) 60 80 16, 21 18, 13 18, 21 23, 2! 24, 22 17, 12 25, 23 23, 22 100 28, 27 27, 31 30, 23 29, 31
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Aubrey Stevenson is running for senior class president at Degrassi Community Schools, and they want to know where the election stands. Let p be the proportion of the students who will vote for Stevenson. Based on a random sample of 175 students from the school, 103 of them have indicated that they will vote for Stevenson. Using this data, test the null hypothesis that p = 0.5 versus the alternative that p > 0.5 at the alpha = 0.1 level. What is the p-value and conclusion of this test? p-value = 0.010; Reject the null hypothesis p-value = 0.010; Fail to reject the null hypothesis p-value=0.019; Reject the null hypothesis p-value = 0.019; Fail to reject the null hypothesis
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