5. Suppose you want to determine if yawning while asking people a question tends

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5. Suppose you want to determine if yawning while asking people a question tends to make them yawn when answering the question. The results of an expcriment designed to determine this are shown in a two-way table here: You vawnedYou didn't vawn Total Subject vawned Subject didn't vawn Total 17 13 30 21 30 26 24 60 You want to simulate in order to determine whether the sample results are statistically significant. Which of the following describes the main assumption behind the simulation you would conduct? Select one: The probability someone will yawn while answering if you yawned when asking the question is 50%. None of these is correct. Yawning while asking a question has an effect on whether or not a person yawns when answering the question. Each person has a 50% chance of yawning. Yawning while asking a question has no effect on whether or not a person yawns when answering the question. O 6. Consider all Hollins students to be our population and suppose we are interested in estimating the mean height of this population. Suppose cach of the students who is enrolled in one of Dr. Clark's Fall 2017 classes selects a random sample of 40 Hollins students and measures the height of each student in her sample. She then uses those 40 heights to construct a 95% confidence interval for the mean height of all Hollins students. Which of the following statements about these confidence intervals is most accurate? Select one: About 95% of the heights of all Hollins students will be contained in these intervals. About 95% of these intervals will contain the population mean height. About 95% of the intervals will be the same. There is a 95% probability the mean height of all Hollins students will be in one of these intervals. 7. Let 1-12 denote the parameter of interest and suppose you have calculated a 90% confidence interval or this parameter to be 0.16, 0.174). Further suppose you now need to test the hypotheses Ho: 1-12-0.170 vs. Hai 1-12 0.170. Based on the 90% confidence interval, which of the following is a legitimate conclusion about these hypotheses? Select one or more: The p-value is larger than 0.10. The p-value is larger than 0.05 The p-value will be smaller than 0.10. The p-value will be smaller than 0.05 None of the statements above would be true about the confidence interval.

Explanation / Answer

Q5) OPtion A is Correct

Q6)Option B is Correct. About 95% of intervals will contain the height

Q7) OPtion A is correct, p value is larger than 0.10 because confidence interval contain 0.170, which means we failed to reject the null hypothesis, in order for null hypothesis to be failed p value is greater than 0.10

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