men Poo l #1 Pool #2 Pol # 3 Sunscreen 8. 13 wearers non Sunscreen wearers 31 27 19 Women Pool #1 Pool # 2 Pool #3 Sunscrcen 23 39 13 wearers non Sunscreen wearers 17 2. Claim: women are more likely to wear SPF than men. I went to three different pools over the course of one week and aSKed men and women if they were wearing Sun screen and the se were the results I got. Identify the null and altcrnative hypothesis. Find the test Statistic using the 2-distribuition formula Zニ • identify the p-value Spă + P ē Calculate 3 interpret the Confidence interval Con Clude reject or fail to reject the null hyPothesis * use o.05 % levei 6ff Significance

men Poo l #1 Pool #2 Pol # 3 Sunscreen 8. 13 wearers non Sunscreen wearers 31 27 19 Women Pool #1 Pool # 2 Pool #3 Sunscrcen 23 39 13 wearers non Sunscreen wearers 17 2. Claim: women are more likely to wear SPF than men. I went to three different pools over the course of one week and aSKed men and women if they were wearing Sun screen and the se were the results I got. Identify the null and altcrnative hypothesis. Find the test Statistic using the 2-distribuition formula Zニ • identify the p-value Spă + P ē Calculate 3 interpret the Confidence interval Con Clude reject or fail to reject the null hyPothesis * use o.05 % levei 6ff Significance

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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-Find the correct null hypothesis and for each correct alternative hypothesis 8. Suppose you test the hypothesis that Intervention A is more effective than Intervention B in preventing high school dropout. How would you word the null and alternative hypotheses?
-Find the correct null hypothesis and for each correct alternative hypothesis 3. Suppose you hear a claim that the average score on a national exam is 78. You think the average is higher than that. Set up your null and alternative hypotheses.
What are the null and alternative hypotheses? A. H0: The two variables, x and y, are associated. Ha: The two variables, x and y, are not associated. B. H0: The variable x is dependent upon y. Ha: The variable y is dependent upon x. C. H0: The two variables, x and y, are not associated. Ha: The two variables, x and y, are associated. The P-value is (Round to three decimal places as needed.) What is the conclusion of the independence test? A. Do not reject H0. The data provide sufficient evidence of an association. B. Reject H0. The data provide sufficient evidence of an association. C. Do not reject H0. The data do not provide sufficient evidence of an association. D. Reject H0. The data do not provide sufficient evidence of an association.
When conducting a hypothesis test, we hope to avoid commiting a type 1 error, which is: 1. Not as bad as committing a type 2 error 2. rejecting a null hypothesis when it is true 3. rejecting the alternate hypothesis when it is true 4. accepting the null hypothesis when the alternate hypothesis is true
Develop the analysis of variance computations for the following completely randomized design. At a = 0.05, is there a significant difference between the treatment means? 2 A 135 119 114 106 132 115 129 94 118 Treatment B 107 114 124 104 108 110 96 113 103 81 106 с 91 83 86 101 89 116 109 119 98 98 99 193.14 132.89 153.78
-Find the correct null hypothesis and for each correct alternative hypothesis 7. Suppose you hear a claim that the average score on a national exam is 78. You think the average is higher than that, and your sample of 100 students produces an average of 75. What are the null and alternative hypotheses?
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If the conclusion in a hypothesis test is to fail to reject H0H0, we can conclude that there is strong evidence that the null hypothesis is true.
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State the null and alternative hypotheses. The proportion of female students (1) is different than the proportion of male students (2). Ho: P₁ = P₂ H₁: P₁ P₂ Ho: P₁ P2 H₁: P₁ P₂ Ho: P₁ P₂ H₁: P₁ P₂ Ho: P₁ P2 H₁: P₁ = P₂
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Evolution and Scientists. A professor claims that more than 83% of all scientists believe in evolution. In a 2014 Pew Research survey of a representative sample of 162 scientists connected to the American Association for the Advancement of Science (AAAS), 146 of these scientists say they believe in evolution. Perform a hypothesis test of the professor's claim using these data.(a) Select the correct null and alternative hypotheses. Ho: p = 0.83Ha: p ≠ 0.83 Ho: p = 0.9Ha: p ≠ 0.9 Ho: p = 0.83Ha: p > 0.83 Ho: p = 0.9Ha: p > 0.9 Ho: p = 0.83Ha: p < 0.83 Ho: p = 0.9Ha: p < 0.9 (b) Find the p-value (round to 4 decimals). (c) Decide whether or not to reject the null hypothesis when α=0.05α=0.05. Fail to reject null hypothesis Reject null hypothesis (d) You should decide that ... there is not enough evidence at α=0.05α=0.05 that more than 83% of scientists believe in evolution. there is enough evidence at α=0.05α=0.05 that more than 83% of scientists believe in evolution.