True Or False onlyyyy you are testing for thesignificance between theIfaverage sales among threedifferent brands you aredealing with a factorial design(more than one factor). *Your answerIf the null hypothesis isrejected when conducting aOne-Way ANOVA, then thereare statistically significantdifferences between all pairsof means *Your answer

Given that We have to find True or False If you are testing for the significance between the…

Answered: you are testing for the significance…

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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During the electoral campaign, the mayor comes under criticism that City Hall and local public utilities are discriminating against Asians in the hiring process (that Asians are less likely to be hired than other races/ethnicities). You find that the proportion of Asians employed by local authorities is 7%, in a random sample of 300 public employees, while they represent 10% of the general population. Conduct a hypothesis tests of whether City Hall has fair hiring practices for α = 0.02. Clearly state the null and alternative hypotheses and the conclusion of your test as well as the p-value for the test
A meteorologist is concerned about the number of tornadoes in her county. Using data from the past 10 years, she randomly selected 250 days from the peak season and found that a tornado was reported on 22 of these days. She conducts a one-proportion hypothesis test at the 5% significance level, to test whether the true proportion of days with a tornado during peak season is greater than 5%. (a) H0:p=0.05; Ha:p>0.05, which is a right-tailed test. (b) Use Excel to test whether the true proportion of days with a tornado during peak season is greater than 5%. Identify the test statistic, z, and p-value from the Excel output, rounding to three decimal places.
A meteorologist is concerned about the number of tornadoes in her county. Using data from the past 10 years, she randomly selected 250 days from the peak season and found that a tornado was reported on 22 of these days. She conducts a one-proportion hypothesis test at the 5% significance level, to test whether the true proportion of days with a tornado during peak season is greater than 5%. (a) H0:p=0.05; Ha:p>0.05, which is a right-tailed test. (b) Use Excel to test whether the true proportion of days with a tornado during peak season is greater than 5%. Identify the test statistic, z, and p-value from the Excel output, rounding to three decimal places. Provide your answer below: test statistic= p-value=
In a one-way ANOVA, in theory, when the null hypothesis is true, MSWithin should be __________ MSBetween. 1. different than 2. equal to 3.larger than 4. smaller than
A company is marketing a new product they say works better than the traditional test tube. There is so much interest in the product that 30 different labs around the world are testing the claim that this product is actually better. If each study uses an alpha level (α) of .10, and if the null hypothesis is true (that the test tube isn't any better that the traditional one), how many of the hypothesis tests would we expect to incorrectly find statistical significance (that is, conclude that the new test tube is better, when it actually isn't)?
2. The average U.S. household has $235,600 in life insurance. A local insurance agent would like to see how households in his city compared to the national average, and selects a simple random sample of 30 households from the city. For households in the sample, the average amount of life insurance is ? = $245,800 with s = $25,500. Using a non-directional hypothesis test and a level of significance of 90%, what conclusion would be reached?
A manufacturer considers his production process to be out of control when defects exceed 3%. In a randomsample of 85 items, the defect rate is 5.9% but the manager claims that this is only a sample fluctuation andproduction is not really out of control. At the 0.01 level of significance, test the manager's claim
A manufacturer of cell phone screens is concerned because 12 percent of the screens manufactured using a previous process were rejected at the final inspection and could not be sold. A new process is introduced that is intended to reduce the proportion of rejected screens. After the process has been in place for several months a random sample of 100 screens is selected and inspected. Of the 100 screens 6 are rejected. What are the appropriate hypotheses to investigate whether the new process reduces the population proportion of screens that will be rejected? A. H0:p=0.12Ha:p<0.12H0:p=0.12Ha:p<0.12 B. H0:p=0.12Ha:p>0.12H0:p=0.12Ha:p>0.12 C. H0:p=0.06Ha:p<0.06H0:p=0.06Ha:p<0.06 D. H0:pˆ=0.06Ha:pˆ>0.06H0:p^=0.06Ha:p^>0.06 E. H0:pˆ=0.12Ha:pˆ<0.12
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 65% at a level of significance of αα = 0.01. According to your sample, 39 out of 55 potential voters prefer the Democratic candidate. The p-value = (Round 4 Places) so p-value is ? than α We should reject, fail to reject or accept the null hypothesis.
Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of e-mail messages sent by GFS employees are not business related. A random sample of 300 e-mail messages was selected to test this hypothesis at the 0.01 level of significance. Sixty of the messages were not business related. The appropriate decision is _______. reject the null hypothesis maintain status quo increase the sample size fail to reject the null hypothesis gather more data
21. The null hypothesis for this ANOVA problem is?
In a one-way ANOVA with 3 groups, a rejection of the null hypothesis implies that a. the 3 population means are equal to each other b. some subset of population means differs from some other subset of population means c. the 3 sample means are equal to each other d. each population mean differs significantly from all other population means

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