Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into thehospital. Do patients at rural hospitals have a different waiting time? The 11 randomly selected patientswho went to the emergency room at rural hospitals waited an average of 1.5 hours to be admitted into thehospital. The standard deviation for these 11 patients was 2.4 hours. What can be concluded at the the a =0.10 level of significance level of significance?For this study, we should use Select an answer. The null and alternative hypotheses would be:Ho: ? Select an answerH₁: ? Select an answer ✓The test statistic ? ✓The p-value =The p-value is ? aBased on this, we should Select an answer the null hypothesis.Thus, the final conclusion is that ...(please show your answer to 3 decimal places.)(Please show your answer to 4 decimal places.)The data suggest that the population mean awaiting time to be admitted into the hospitalfrom the emergency room for patients at rural hospitals is not significantly different from 4hours at a = 0.10, so there is statistically insignificant evidence to conclude that thepopulation mean waiting time to be admitted into the hospital from the emergency room forpatients at rural hospitals is different from 4 hours.The data suggest the populaton mean is significantly different from 4 at a = 0.10, so there isstatistically significant evidence to conclude that the population mean waiting time to beadmitted into the hospital from the emergency room for patients at rural hospitals is differentfrom 4 hours.

Answered: Image /qna-images/answer/33fcf204-3488-4bf8-86e4-8f9bf4e880fe.jpg

Answered: Nationally, patients who go to the…

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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Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 23.5 with a standard deviation of 4.3, while the 200 students in group 2 had a mean score of 17.7 with a standard deviation of 4.1. Complete parts (a) and (b) below. (a) Determine the 95% confidence interval for the difference in scores, μ1−μ2. Interpret the interval. The lower bound is __. The upper bound is ___ (Round to three decimal places as needed.) B Interpret the interval. Choose the correct answer below. A. The researchers are 95% confident that the difference of the means is in the interval. B. There is a 95% probability that the difference of the means is…
The manager of the shipping department of a mail-order operation located in New York advertises that the length of time it takes for customers in California to receive their orders is 8 days. However, the office has been receiving complaints from customers in California stating that orders do not arrive in time advertised. To learn more about this potential problem, the manager chose a random sample of 15 orders. The sample mean of delivery times was 12.25 days. The sample standard deviation was 3.67 days.The average time it takes for all California customers to receive their orders is to be estimated with a 99% confidence interval. a. The ? − or ? −value that should be used to construct this interval is b. The margin of error is equal to
In a random sample of males, it was found that 23 write with their left hands and 225 do not. In a random sample of females, it was found that 59 write with their left hands and 470 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females.
Do political sclence classes require more writing than history classes? The 57 randornly selected political science classes assigned an average of 17.8 pages of essay writing for the course. The standard deviation for these 57 classes was 4 pages. The 58 randomly selected history classes assigned an average of 16.8 pages of essay writing for the course. The standard devlation for these 58 classes was 5.6 pages. What can be concluded at the a = 0.10 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answerv Select an answerv Select an answerv H: Select an answerv Select an answerv Select an answerv b. The test statistic ?v = (please show your answer to 3 decimal places.) c. The p-value = d. The p-value is ?v a e. Based on this, we should Select an answerv the null hypothesis. f. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) O The results are statistically significant…
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 21.2 with a standard deviation of 4.1, while the 200 students in group 2 had a mean score of 17.5 with a standard deviation of 3.8. Complete parts (a) and (b) below. (a) Determine the 95% confidence interval for the difference in scores, H, - H2. Interpret the interval. The lower bound is The upper bound is (Round to three decimal places as needed.) Interpret the interval. Choose the correct answer below. O A. There is a 95% probability that the difference of the means is in the interval. O B. The researchers are 95% confident that the difference of the means is in the interval. O C. The…
Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 13 randomly selected patients who went to the emergency room at rural hospitals waited an average of 2.1 hours to be admitted into the hospital. The standard deviation for these 13 patients was 2.3 hours. What can be concluded at the the a = 0.01 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? C Select an answer H₁: ? ☺ Select an answer C O (please show your answer to 3 decimal places.) 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. g. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) The data suggest the populaton mean is significantly lower than 4 at a = 0.01, so there is statistically…
Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at rural hospitals have a different waiting time? The 12 randomly selected patients who went to the emergency room at rural hospitals waited an average of 5.8 hours to be admitted into the hospital. The standard deviation for these 12 patients was 1.8 hours. What can be concluded at the a = 0.10 level of significance 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: ?v Select an answer ✓ c. The test statistic ? ✓ (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value = e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean awaiting time to be admitted into the hospital from the emergency room for…
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 24.9 with a standard deviation of 4.3, while the 200 students in group 2 had a mean score of 17.2 with a standard deviation of 3.4. Complete parts (a) and (b) below. (a) Determine the 95% confidence interval for the difference in scores, µ, - H2. Interpret the interval. The lower bound is The upper bound is. (Round to three decimal places as needed.)
Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hit the ball so far. Designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than 245 yards on average. Suppose a random sample of 139 golfers be chosen so that their mean driving distance is 243.3 yards. The population standard deviation is 48.9. Use a 5% significance level. Calculate the followings for a hypothesis test where Ho : µ = 245 and H1 : µ < 245 : The test statistic is The final conclustion is A. There is not sufficient evidence to warrant rejection of the claim that the mean driving distance is equal to 245 B. There is sufficient evidence to warrant rejection of the claim that the mean driving distance is equal to 245
Nationally, patients who go to the emergency room wait an average of 5 hours to be admitted into the hospital. Do patients at rural hospitals have a different waiting time? The 12 randomly selected patients who went to the emergency room at rural hospitals waited an average of 3.9 hours to be admitted into the hospital. The standard deviation for these 12 patients was 2.2 hours. What can be concluded at the the a = 0.10 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho:2 Select an answer H: Select an answer C. The test statistic ? v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimnal places.) e. The p-value is ? Based on this, we should Select an answer the null hypothesis. 2. Thus, the final conclusion is that The data suggest the population mean is not significantly different from 5 at a = 0.10, so there is statistically insignificant…
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 26.3 with a standard deviation of 5.2, while the 200 students in group 2 had a mean score of 17.6 with a standard deviation of 2.8. Complete parts (a) and (b) below. (a) Determine the 90% confidence interval for the difference in scores, μ1−μ2. Interpret the interval. The lower bound is nothing. The upper bound is nothing. (Round to three decimal places as needed.)
To evaluate if auditors might be helped in determining the chances of fraud if they carefully measure cash flow, samples of midlevel auditors from CPA firms were asked to indicate the chance of material fraud on a scale from 0 to 100 for a case. A random sample of 36 auditors used the cash-flow information. Their mean assessment was 35.51, and the sample standard deviation was 24.14. For an independent random sample of 36 auditors not using the cash-flow information, the sample mean and standard deviation were, respectively, 40.58 and 29.18. Assuming that the two population distributions are normal with equal variances, test against a two-sided alternative the null hypothesis that the population means are equal. (Use α = 0.05.) Click the icon to view a table of critical values for the Student's t-distribution. Let μx be the mean assessment for auditors who measured cash flow and μy be the mean assessment for auditors not using the cash-flow information. Determine the null and…

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