3. State or specify the null and alternative hypotheses in the following (use complete statements,not symbols):a. The mean age of professors in UPang is more than 30 years old.a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:b. A research on whether on-line instruction is better than lecture method of lesson presentation.a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:c. A research concerning the correlation between students' general average in all college coursesand college entrance examination (CEE) score.a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:d. The mean height of female students in Advanced Statistics class is 5' 5".a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:e. The government antipollution spokesperson asserts that more than 78% of the fishingindustries in Pangasinan meet the antipollution standards. An anti-pollution advocate wants totest this claim.a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:

Null hypothesis holds ≥,≤ or = sign and alternative hypothesis holds <,> or ≠ sign. If claim…

Answered: 3. State or specify the null and…

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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11. In professional tennis for 2017 men challenged 2100 calls and 1105 of them were changed. While women challenged 1309 calls and 625 of them were changed. Conduct a hypothesis test to test the claim that men get more calls changed than women. Use a significance level of 0.05.
In an experiment, students were given words to memorize, then were randomly assigned to either take a 90 minute nap or take a caffeine pill. A couple hours later, they were tested on their recall ability. We wish to test to see if the sample provides evidence that there is a difference in mean number of words people can recall depending on whether they take a nap or have some caffeine. a). What are the null and alternative hypotheses for this test?b). If the results of the test comparing sleep and caffeine for memory are statistically significant, what does that mean in terms of sleep, caffeine, and memory?c). If the results are not statistically significant, what does that mean in terms of sleep, caffeine, and memory?
1. Name your alternative and null hypotheses. b) Be sure and provide the mean for each group, standard error and significance levels. c) Write out a COMPETE statement as to and whether you accept or reject the null hypothesis. The federal government instituted a training program to help participants increase their monthly income. The Department’s inspector general wished to evaluate the program’s success or failure. Monthly income before the training program Monthly income after the training program 1363 1373 1482 1492 1579 1589 1643 1653 1752 1762 1848 1858 1927 1907 2055 2035 2143 2053 2237 2247 1752 1782 1752 1762 1643 1653 1848 1858 1752 1762
In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? a) Determine the null and alternative hypotheses. Ho: P = Ha:p Select an answer 2 = b) Determine the test statistic. Round to two decimals. c) Find the p-value. Round to 4 decimals. P-value = d) Make a decision. (Put in the correct symbol and value) O Fail to reject the null hypothesis Reject the null hypothesis e) Write the conclusion. O There is sufficient evidence to support the claim that the percentage of college students who work is different than 71%.
According to an NDP Group report, the mean number of meals prepared and eaten at home is 700 per year. Suppose that a random sample of 36 households showed a sample mean number of meals prepared and eaten at home was 690. Assume σ = 40. Test whether the population mean number of such meals is less than 700 using a significance level of 0.01. State the null and alternate hypotheses. Explain whether your test will be left, right, or two-tailed.
a) Clearly label and state the appropriate null and alternative hypotheses.b) State your evidence-based conclusion in a well written contextual sentence for a general audience– be sure your conclusion is not about rejecting or not rejecting hypotheses as a general audience2. A newspaper report states that the mean age of commercial jets in the United States is 14 years.An executive of AirJet, a large airline company, claims that the mean age of the planes in his company is lower. He selects a sample of 36 planes and find the mean age to be 11.8 years.Assuming his planes is the same as the national average the chance of this outcome is 0.005.
I believe that the population mean number of times that adults go for a walk each week is less than 2.0. I spoke with 8 adults and found that they went on walks 3,5,2,1,0,4,0 and 5 times last week. Test this hypothesis at the 0.5 significance level.
Response bias occurs when respondents consciously or unconsciously misrepresent the truth Othe research task is improperly conducted or executed Individuals in the sample are somehow systematically different from the overall population in some significant way. respondents who have a strong opinion about the survey topic are more likely to respond
Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1807 people and found that 574 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? Но: ? H1: ? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed O right-tailed O two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. f) Do you reject the null hypothesis? O We reject the null hypothesis, since the p-value is less than the significance level. O We reject the null hypothesis,…
14. In 2005, Health Canada claimed that 16.7% of Canadian adults are obese. A researcher wanted to check whether this percentage has changed in 2009. He randomly selected 200 Canadian adults and found 29 of them are obese. Use9% significance level. Null and alternative hypothesis are a) H0: p = 0.167, H1: p not equal to 0.167 b) H0: mu not equal to 16.7, H1: mu = 16.7 c) H0: p not equal to 0.167, H1: p = 0.167 d) H0: mu = 16.7, H1: mu not equal to 16.7
6. b. Test statistic = ? c. P-value = ? d. Reject/Accept null hypothesis ? -0.92 is wrong for the test statistic

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