Pls help I need in 1 hour In a study of treatments for very painful "oluster headaches, 140 patients were treated with oxygen and 152 other patients were given a placebo conslsting of ordinary air. Among the 140 patients in the axygen treatment group. 120 were freefrom hoadeches 15 minutos aflor troatment Among tho 152 pationts given the placebo, 33 were free from headachee 15 minutos after treatment. Use a 0.01 significance level to tost the dlaim thet the oxygen troetment is offoctive. Compleleparts (a) trough (e) below.e. Toet the olaim using a hypothesis testConsider the first sample to be the sample of petients troated with axypen and the necond sample to be the sample of patients given a plecnbo. What nre the null and alternative hypothesos for theo hypothesis test?OC. Ho: P1 =P2OA Hg: P, SPH:P PaO B. Ho: P, 2p2H: P P2OE H: P, =P2H: Pr

In the given study, among 140 patients treated with oxygen, 120 were free from headaches, and among…

Answered: from headeches 15 minutos after…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a trial designed to test the effectiveness of a drug in preventing heart disease, 10,671 male physicians were treated with the drug and 10,674male physicians were given placebos. Among the subjects in the drug treatment group, 117 experienced myocardial infarctions (heart attacks). Among the subjects given placebos, 241 experienced myocardial infarctions. Use a 0.01 significance level to test the claim that the drug has no effect on myocardial infarctions. Test the claim using a hypothesis test. Identify the test statistic.
In a trial designed to test the effectiveness of a drug in preventing heartdisease, 11,783 male physicians were treated with the drug and 11,786 male physicians were given placebos. Among the subjects in the drug treatment group, 134 experienced myocardial infarctions (heart attacks). Among the subjects given placebos, 281 experienced myocardial infarctions. Use a 0.05 significance level to test the claim that the drug has no effect on myocardial infarctions. Test the claim using a hypothesis test. Identify the test statistic.
The U.S. Census Bureau conducts annual surveys to obtain information on the percentage of the voting-age population that is registered to vote. Suppose that578 employed persons and 492 unemployed persons are independently and randomly selected, and that261 of the employed persons and 194 of the unemployed persons have registered to vote. Can we conclude that the percentage of employed workers ( p1 ), who have registered to vote, exceeds the percentage of unemployed workers ( p2 ), who have registered to vote? Use a significance level of α=0.1 for the test. Step 5 of 6 : Determine the decision rule for rejecting the null hypothesis H0H0. Round the numerical portion of your answer to two decimal places.
Do U.S census bureau conducts annual survey to obtain information on the percentage of the voting age population that is registered to vote. Suppose that 385 employed person and 473 unemployed persons are independently and randomly selected, in that 202 of the employed persons and 185 of the unemployed persons have registered to vote. Can we conclude that the percentage of employed workers (P1), who have registered to vote, exceeds the percentage of an unemployed workers (P2), who have registered to vote? Use a a significance level of a= 0.1 for the test. 1. compute the value of the test statistic. Round to two decimal places. 2. determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to two decimal places. 3. make the decision for the hypothesis test.
Do U.S census bureau conducts annual survey to obtain information on the percentage of the voting age population that is registered to vote. Suppose that 385 employed person and 473 unemployed persons are independently and randomly selected, in that 202 of the employed persons and 185 of the unemployed persons have registered to vote. Can we conclude that the percentage of employed workers (P1), who have registered to vote, exceeds the percentage of an unemployed workers (P2), who have registered to vote? Use a a significance level of a= 0.1 for the test. 1.state the knoll and now turn to hypothesis for the test. 2.find the values of the two sample poroportions,p1 and p2.round to three decimal places. 3.compute the weighted estimate of p, p. Round to three decimal places. 4.compute the value of the test statistic. Round to two decimal places. 5.determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to two decimal places. 6.make the decision…
A nationwide study of American homes revealed that 64% have lawn mowers. A lawn equipment manufacturer, located in Omaha, feels that this estimate is too low for homes in Omaha. Test the claim that more than 64% of homes in Omaha have lawn mowers if a survey of 496 homes determined that 334 homes have lawn mowers. Use α= 0.01 significance level.
In a recent court case it was found that during a period of 11 years 868 people were selected for grand jury duty and 42% of them were from the same ethnicity. Among the people eligible for grand jury duty, 80.8% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. Which of the following is the hypothesis test to be conducted? What is the test statistic? What is the P-value? What is the conclusion on the null hypothesis? Does the jury selection system appear to be fair?
In a recent court case it was found that during a period of 11 years 892people were selected for grand jury duty and 41% of them were from the same ethnicity. Among the people eligible for grand jury duty, 79.2% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. What is the test statistic? What is the P-value?
A recent broadcast of a television show had a 20 share, meaning that among 7,000 monitored households with TV sets in use, 27% of them were tuned to this program. Use a 0.01 significance level to test the claim of an advertiser among the households with TV sets in use, less than 25% were tuned into the program. Follow the 8 - step process.
The Bureau of Transportation tracks the flight arrival performances of the 10 biggest airlines in the UnitedStates. Flights that arrive within 15 minutes of schedule are considered on time. Using sample data consistentwith Bureau of Transportation statistics, in January 2001, a sample of 924 flights showed 742 on time and inJanuary 2002, a sample of 841 flights showed 714 on time. Test the hypothesis at a 0.05 level of significanceto determine whether the major airlines improved on-time flight performance during the one-year period. Compute for: null and alternative hypothesis in words level of significance and critical value/s and region (graph it please) compute the test statistic decision state the conclusion
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In a recent court case it was found that during a period of 11 years 870 people were selected for grand jury duty and 37% of them were from the same ethnicity. Among the people eligible for grand jury duty, 79.6% were of this ethnicity. Use a 0.05 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. a. What is the test statistic? z equals (Round to two decimal places as needed.) b. What is the P-value? P-value equals (Round to four decimal places as needed.)

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