In a randomized controlled trial, insecticide-treated bednets were tested as a way to reduce malaria. Among 310 infants using bednets, 10 developed malaria. Among 286 infants not using bednets, 33 developed malaria. Use a 0.01 significance level to test the claim that theincidence of malaria is lower for infants using bednets.a. Test the claim using a hypothesis test.b. Test the claim by constructing an appropriate confidence interval.c. Based on the results, do the bednets appear to be effective?a. What are the null and alternative hypotheses?Let the infants using bednets be sample 1 and let the infants not using bednets be sample 2. Choose the correct hypotheses below.O A.Ho: P₁ P₂H₁: P₁ P₂O D. Ho: P₁ = P₂H₁: P₁>P2Identify the test statistic.(Round to two decimal places as needed.)Identify the P-value.(Round to three decimal places as needed.)What is the conclusion for this test?O B. Ho: P₁ = P2H₁: P₁ P2O E. Ho: P₁ P2H₁: P₁

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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A study of 420,007 cell phone users found that 136 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0319% for those not using cell phones. Complete parts (a) and (b). Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not?
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In a randomized controlled trial, insecticide-treated bednets were tested as a way to reduce malaria. Among333 infants using bednets,13 developed malaria. Among 255 infants not using bednets, 23 developed malaria. Use a 0.05 significance level to test the claim that the incidence of malaria is lower for infants using bednets. a. Test the claim using a hypothesis test. b. Test the claim by constructing an appropriate confidence interval. c. Based on the results, do the bednets appear to be effective? a. What are the null and alternative hypotheses? Identify the test statistic. nothing (Round to two decimal places as needed.) Identify the P-value. nothing (Round to three decimal places as needed.) What is the conclusion for this test? Since the P-value is ▼ less than greater than the significance level alphaα, ▼ fail to reject reject the null hypothesis. b. Let the infants using bednets be sample 1 and let the infants not using bednets be…
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A study of 420,039 cell phone users found that 131 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0443% for those not using cell phones. Complete parts (a) and (b). ..... a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. • D%
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