Only about 18% of all people can wiggle their ears. Isthis percent different for millionaires? Of the 397nillionaires surveyed, 67 could wiggle their ears. Whatcan be concluded at the a = 0.10 level of significance?a. For this study, we should useSelect an answerb. The null and alternative hypotheses would be:Но:Select an answer O(pleaseenter a decimal)H1:Select an answer ©(Pleaseenter a decimal)c. The test statistic ? o(pleaseshow your answer to 3 decimal places.)d. The p-value:(Please show youranswer to 3 decimal places.)e. The p-value is ? af. Based on this, we should Select an answer O thenull hypothesis.g. Thus, the final conclusion is that ...The data suggest the populationproportion is not significantly differentfrom 18% at a = 0.10, so there isstatistically insignificant evidence toconclude that the population proportion ofmillionaires who can wiggle their ears isdifferent from 18%.The data suggest the populatonproportion is significantly different from18% at a = 0.10, so there is statisticallysignificant evidence to conclude that thepopulation proportion of millionaires whocan wiggle their ears is different from 18%.The data suggest the populationproportion is not significantly differentfrom 18% at a = 0.10, so there isstatistically significant evidence toconclude that the population proportion ofmillionaires who can wiggle their ears isequal to 18%.

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Answered: Only about 18% of all people can wiggle…

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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Need help with C , D and H please
I need the right answers to b and c.
need help with C
The average salary in this city is $48,800. Is the average less for single people? 57 randomly selected single people who were surveyed had an average salary of $44,815 and a standard deviation of $16,730. What can be concluded at the a = 0.05 level of significance?
When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure
Suppose are running a study/poll about the accuracy rate for fingerprint identification. You randomly sample 127 people and find that 89 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho: p = 0.72 H₁: p 0.72 Calculate the test statistic, rounded to 3 decimal places Question Help: Video Message instructor Post to forum Submit Question
A news article that you read stated that 51% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 122 of the 248 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ✓ Select an answer H₁: ? Select an answer (please enter a decimal) (Please enter a decimal) c. The test statistic ? d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should Select an answer the null hypothesis. (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.)
The national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? Hint: think about how many samples we have data from. OHO: H= 1500; HA: µ = 1500 Ho: H Duke National; HA: H Duke National Ho: x= 1500; HA: x > 1500 OHO: H = 1500; HA: > 1500 O Ho: P = 1500; HA: P > 1500
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Six years ago, 11.4% of registered births were to teenage mothers. A sociologist believes that the percentage has increased since then. Which of the following is the correct conclusion? O A. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O B. There is sufficient evidence to conclude that the percentage of teenage mothers has increased. O C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O D. There is not sufficient evidence to conclude that the percentage of teenage mothers has increased.
need help with B, C, D
Suppose we have a case-control study that completes and yields a study OR = 4.5. If we were told the true OR in the population was actually 2.25 (we normally wouldn’t know this, but suppose hypothetically someone was able to know this and told us), this again means our study OR is biased. Is our study OR biased towards or away from the null? A)Away from the null. B)Towards the null.
A news article that you read stated that 54% of voters prefer the Democratic candidate. You think that the actual percent is larger. 129 of the 212 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v| Select an answer v (please enter a decimal) H1:|? v|| Select an answer v (Please enter a decimal) c. The test statistic ? v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly larger 54% at a = 0.10, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 54%. O The data suggest the…

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