(9.1.15-T D Assigned Media Question Help Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 50 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 90 of the 106 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Identify the test statistic. %= (Round to two decimal places as needed.) (0,0) More Enter your answer in the answer box and then click Check Answer.

(9.1.15-T D Assigned Media Question Help Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 50 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 90 of the 106 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Identify the test statistic. %= (Round to two decimal places as needed.) (0,0) More Enter your answer in the answer box and then click Check Answer.

Name: Identify the test statistics, pvalue, & the confidence interval (9.1.1
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Description: Identify the test statistics, pvalue, & the confidence interval (9.1.15-TD Assigned MediaQuestion HelpRhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 50 subjects treated with echinacea developed rhin

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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Four drug companies are studying the effect of their new drugs. In its clinical trials, company A used a one tailed test with a significance level of .01; company B used a one tailed test with a significant level of 0.05; company C used a two tailed test with a significant level of 0.01 and company D used a two tailed test with a significant level of 0.05. Which of the following statement is correct? Question- If all of the four drug companies in the previous question (Q1-(1)) obtained a p-value of 0.03 in their c clinical trails Company A will reject the null hypothesis (H0) Company B will reject the null hypothesis (H0) Company C will reject the alternative hypothesis (H1) Company D will reject the alternative hypothesis (H1)
A study was conducted simultaneously in two different communities in New York City to examine an association between variable A and variable B. The resulting analysis yielded two different p-value in the two communities? Study in Community A yielded a p-value of 0.01.Study in Community B yielded a p-value of 0.05. Which of the above values provides a stronger indictment of the null hypothesis? A. 0.01B. 0.05
Q.5.1 A national publishing house claims that 45% of all weekly magazine readers inSouth Africa read their publication. Test this claim at the 5% significance level,if a survey found that 205 out of a random sample of 500 magazine readerssaid that they read the relevant publication.
Do well-rounded people get fewer colds? A study on the Chronicle of Higher Education was conducted by scientist at Carnegie Mellon University, the University of Pittsburgh and the University of Virginia. They found that people who have only a few social outlets get more colds than those who are involved in a variety of social activities. Suppose that of the 276 healthy men and women tested, n1=96 had only a few social outlets and n2=105 were busy with six or more activities. When these people were exposed to a cold virus, the following results were observed: Construct a 99% confidence interval for the difference in the two population proportions.
Which of the following is the correct option for the appropriate test and degree of freedom (sd) for the hypothesis-based compliance of the data of a 6-category (class) variable, which is summarized by counting 300 pieces of data? Please select one: a. Ki square sd = 299 b. t test sd = 299 c. t test sd 5 d. Ki square sd = 49 e. Ki Square sd = 5
To test the fairness of law enforcement in its area, a local citizens’ group wants to know whether women and men are unequally likely to get speeding tickets. Two hundred randomly selected adults were phoned and asked whether or not they had been cited for speeding in the last year. Using the results in the following table and a 0.02 level of significance, test the claim of the citizens’ group. Let men be Population 1 and let women be Population 2. Speeding Tickets Ticketed Not Ticketed Men 19 74 Women 11 96 Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places. Step 3 of 3: Draw a conclusion and interpret the decision.
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To test the fairness of law enforcement in its area, a local citizens’ group wants to know whether women and men are unequally likely to get speeding tickets. Three hundred randomly selected adults were phoned and asked whether or not they had been cited for speeding in the last year. Using the results in the following table and a 0.02 level of significance, test the claim of the citizens’ group. Let men be Population 1 and let women be Population 2. Ticketed Not Ticketed Men 14 165 Women 22 99 Step 1 of 3: State the null and alternative hypotheses for the test Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places. Step 3 of 3: Draw a conclusion and interpret the decision.
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Suppose a research study uses two independent groups with 21 individuals in each group. If a t-test analysis produces a calculated value of t of 1.68, which of the following is the correct decision?A. At the .05 level of significance, reject the null hypothesisB. At the .01 level of significance, reject the null hypothesisC. At the .05 level of significance, fail to reject the null hypothesisD. Impossible to answer without additional information
An online clothing retailer is testing a new e-mail campaign by sending one version of the e-mail with the word “free” in the subject line (version A) to a group of 1,500 customers and another version of the e-mail with word “discount” in the subject line (version B) to a different group of 1500 customers. After tracking the responses to the two versions of the e-mail advertising, the retailer finds that 75 responded to version A and 105 responded to version B. At 0.05 significance level, can it be concluded that the response rate for version B is higher than the response rate to version A What is your decision? Enter “R” if your decision is to reject the null hypotheses. Enter “F” if the decision is fail to/do not reject the null hypotheses. Your answer (R/F) is: Which of the followings is the most appropriate conclusion for the hypotheses test? Enter the number corresponding to the most appropriate conclusion in the answer box. For example, if statement number 2 is the most…
An online clothing retailer is testing a new e-mail campaign by sending one version of the e-mail with the word “free” in the subject line (version A) to a group of 1,500 customers and another version of the e-mail with word “discount” in the subject line (version B) to a different group of 1500 customers. After tracking the responses to the two versions of the e-mail advertising, the retailer finds that 75 responded to version A and 105 responded to version B. At 0.05 significance level, can it be concluded that the response rate for version B is higher than the response rate to version A Determine which of the following formulations of the hypotheses is appropriate and enter the corresponding number in the answer text box. Index “a” refers to the population of the customers who respond to version A and index “b” refers to the population of customers who are responsive to version B. Identify and enter the number corresponding to the most appropriate formulation for the…