36. In a two-way ANOVA test, how many null hypotheses are tested?A. 1B. 1 or 2C. 2 or 3D. More than 337. A researcher wants to understand how an annual mortgage payment (income level and zonal location using a two-way ANOVA without interacincomplete ANOVA table are shown below.Income (FactoLowMediumDowntown2555Zonal Location (Factor B)Suburbs7075a26

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Description: 36. In a two-way ANOVA test, how many null hypotheses are tested?A. 1B. 1 or 2C. 2 or 3D. More than 337. A researcher wants to understand how an annual mortgage payment (income level and zonal location using a two-way ANOVA without interacincomplete

Two way ANOVA is used to compare the difference in the means between the two independent group…

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In a two-way ANOVA test, how many null hypotheses are tested? А. 1 В. 1 or 2 С. 2 or 3 D. More than 3

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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For safety reasons, calf dehorning has become a routine practice at dairy farms. A report by a continental government organization stated that 80% of that continent's dairy farms carry out calf dehorning. A later study, published in a reputable dairy science journal, found that in a sample of 635 dairy farms in the continent, 513 dehorn calves. Does the journal's study support or refute the figure reported by the government organization? Explain. Test the relevant hypotheses using a = 0.05.
Do the states that voted for McCain have a different average percent of heavy drinkers than the states that voted for Obama in the 2008 election? 1. To answer the question of whether McCain states and Obama states have different average percent, heavy drinkers, we will use a 2 sample t-test. Why? 2. What should the hypotheses be for this test?
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Out of 600 customers, 360 like the new plastic bottle packaging of a certain softdrink. Is there sufficient evidence that the proportion of the customers/buyers who like the new packaging is not equal to 50% at 0.02 level of significance? a) What is the null and alternative hypothesis? b) What is the correct decision? c) State the conclusion
The Pew Research Group conducted a poll in which they asked, "Are you in favor of, or opposed to, executing persons as a general policy when the crime was committed while under the age of 18?" Of the 580 randomly selected Catholics surveyed, 180 indicated they favored capital punishment; of the 600 randomly selected seculars (those who do not associate with religion) surveyed, 238 favored capital punishment. State the following values: 1. Sample estimate for the seculars (2 decimal places): 2. Sample estimate for the Catholics (2 decimal places): 3. Critical value for the confidence interval: 4. Estimate of the standard error (3 decimal places): 5. Confidence interval for seculars -catholics (2 decimal places each value):
an airline promotion to business travelers is based on the assumption that two-thirds ofbusiness travelers use a laptop computer on overnight business trips.a. State the hypotheses that can be used to test the assumption.b. what is the sample proportion from an american express sponsored survey thatfound 355 of 546 business travelers use a laptop computer on overnight businesstrips?
An airline promotion to business travellers is based on the assumption that two-thirdsof business travellers use a laptop computer on overnight business trips.1. State the hypotheses that can be used to test the assumption.2. What is the sample proportion from an American Express sponsored survey thatfound 355 of 546 business travellers use a laptop computer on overnight businesstrips?3. What is the p-value?4. Use α = .05. What is your conclusion and comment?
A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative action programs for women and minorities for admission to college and universities. She wants to use a 2003 estimate of 55% obtained from a Gallup Youth Survey as a prior estimate. What sample size should be obtained if she wishes the estimate to be within 4 percentage points with 90% confidence?
c please survey of 1000 adults from a certain region asked, "If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?" The results indicated that 58% of the females and 51% of the males answered window tinting. The sample sizes of males and females were not provided. Suppose that of 600 females, 348 reported window tinting as their preferred luxury upgrade of choice, while of 400 males, 204 reported window tinting as their preferred luxury upgrade of choice. Complete parts (a) through (d) below. a. Is there evidence of a difference between males and females in the proportion who said they prefer window tinting as a luxury upgrade at the 0.05 level of significance? State the null and alternative hypotheses, where π1 is the population proportion of females who said they prefer window tinting as a luxury upgrade and π2 is the population proportion of males who said they prefer window tinting as a…
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=
#2.The Gallup organization periodically polls adults living in the U.S. about the issue ofimmigration. Participants are asked whether they think immigration should increase,decrease, or stay at present levels. When this question was asked in June of 2016, 38%of respondents said they thought immigration should decrease. When it was asked inJune of 2018, 29% of respondents said they thought immigration should decrease.For the purpose of this problem, suppose that the sample size was 200 in both 2016 and2018, and that each represented a simple random sample of adults living in the U.S. atthat time. Is there evidence for a real change in opinion among U.S. adults between2016 and 2018, or do you think the results are just due to chance? Carry out all thesteps for a two-sample z test and state your conclusion. Suppose I had told you in #2 that the same people had been surveyed in 2016 and 2018.What’s the problem with carrying out the two-sample z test in this case?