Identify the null hypothesis, alternative hypothesis,test statistic, P-value, conclusion about the nullhypothesis, and final conclusion that addresses theoriginal claim.Use a significance level of 0.05 to test the claim.One-way ANOVA:Source DF SS MS IF PSize 3 30 10.00 1.6 0.264Error 8 50 6.25Total 11 80Null Hypothesis, HOAlternativeHypothesis, H1Test Statistic, FP-valueSignificance levelConclusion<<

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Answered: Identify the null hypothesis,…

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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Use 0.05 significance level, test the claim that at least one of the mean hurricane intensities is different from others. Fill out the one way ANOVA table to complete the hypothesis test.
A new treatment for a severe allergy is claimed to have a better cure rate than the standard of care, which has 60% of cure rate. A random sample of 50 patients, suffering from allergy, are given the new treatment and as a result 34 are cured.a) Is the claim valid for a significance level of 0.05? Use p-value analysis.b) If you conclude that the claim is not valid, i) what would be the required sample size to support the claim? ii) otherwise, what would be the required sample size to unsupport the claim For the analysis in part b assume that the percentage change in n and number of cured patients are exactly the same, i.e. if n is doubled, that is n = 100, than number of cured people will also be doubled, i.e. 68 etc.)
In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective. What is the null hypothesis? What is the decision rule? What is the test statistic? What is the p-value? What is the conclusion?
Determine whether the following situation is true. When performing a hypothesis test for one population proportion with significance level of 5%, using critical value approach or the p-value approach might result in different conclusions. a) True b) False
Is there a larger proportion of days with precipitation in Dublin Ireland than New York City? In recent years Dublin experienced 129 days of precipitation of 365 days. New York City experienced 119 days of precipitation of 365 days. Use a 0.05 significance level to determine if Dublin has a significantly larger proportion. What is your decision for the hypothesis test? What is the z-stat and p-value.
A builder claims that bidets are installed in more than 50% of all homes being constructed today in suburban Lapu-lapu. Would you agree with this claim if a random survey of new homes in this city showed that 54 out of 150 had bidets installed? Use a 0.05 level of significance. Find the critical value, standard test statistic and statistical decision.
According to a survey of 650 Web users from Generation Y, 351 reported using the Internet to download music. a. Determine the sample proportion. b. At the 5% significance level, do the data provide sufficient evidence to conclude that a majority of Generation Y Web users use the Internet to download music? Use the one-proportion z-test to perform the appropriate hypothesis test, after checking the conditions for the procedure.
Independent random samples of 27 people living on the west side of a city and 26 people living on the east side of a city were taken to determine if the income levels of west side residents are less than the income levels of east side residents. Given the testing statistics below, determine if the data provides sufficient evidence to conclude that the income levels of west side residents are less than the income levels of east side residents, at the 4% significance level
A pipes manufacturer makes pipes with a length that is supposed to be 19 inches. A quality control technician sampled 36 pipes and found that the sample mean length was 19.03 inches and the sample standard deviation was 0.17 inches. The technician claims that the mean pipe length is not 19 inches. What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.1 significance level to support the technician's claim?
An information technology help desk has a service level agreement (SLA) that says that clients should be contacted about their service requests within 1 hour (60 minutes) of the help desk receiving the request. Jackie, the help desk manager, wants to check if the help desk is actually taking longer than 60 minutes to respond. For a random sample of 20 service requests, Jackie obtained the time between the help desk receiving the request and the client being contacted. The marketer conducts a one-mean hypothesis at the 5% significance level, to test whether the response time is greater than 60 minutes. (a) Which answer choice shows the correct null and alternative hypotheses for this test? Select the correct answer below: H0:μ=20; Ha:μ<20, which is a left-tailed test. H0:μ=60; Ha:μ<60, which is a left-tailed test. H0:μ=20; Ha:μ>20, which is a right-tailed test. H0:μ=60; Ha:μ>60, which is a right-tailed test.
What is the critical F value when the sample size for the numerator is twenty one and the sample size for the denominator is fifteen? Use a two-tailed test and the 0.02 significance level
According to a survey of 650 Web users from Generation Y, 338reported using the Internet to download music. a. Determine the sample proportion. b. At the 10% significance level, do the data provide sufficient evidence to conclude that a majority of Generation Y Web users use the Internet to download music? Use the one-proportion z-test to perform the appropriate hypothesis test, after checking the conditions for the procedure. a. The sample proportion is b. What are the hypotheses for the one-proportion z-test? What is the test statistic? Identify the critical value(s). What is the conclusion of the hypothesis test?

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