Assume the average amount of days a patient spends in hospital is believed to be 24 days and a hospital claims that their experience suggests that the average is actually lower. They randomly selected and followed 33 patients and found that the mean number of days was 21.5 with a standard deviation of 7.8. What is the test statistic and your conclusion for a=0.05? O A. Test statistic: -1.841 Conclusion: Not enough evidence to reject the null hypothesis O B. Test statistic: 1.841 Conclusion: Not enough evidence to reject the null hypothesis O C. Test statistic: 1.841 Conclusion: Reject the null hypothesis O D. Test statistic: -1.841 Conclusion: Reject the null hypothesis

Assume the average amount of days a patient spends in hospital is believed to be 24 days and a hospital claims that their experience suggests that the average is actually lower. They randomly selected and followed 33 patients and found that the mean number of days was 21.5 with a standard deviation of 7.8. What is the test statistic and your conclusion for a=0.05? O A. Test statistic: -1.841 Conclusion: Not enough evidence to reject the null hypothesis O B. Test statistic: 1.841 Conclusion: Not enough evidence to reject the null hypothesis O C. Test statistic: 1.841 Conclusion: Reject the null hypothesis O D. Test statistic: -1.841 Conclusion: Reject the null hypothesis

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Description: Assume the average amount of days a patient spends in hospital is believed to be 24days and a hospital claims that their experience suggests that the average is actuallylower. They randomly selected and followed 33 patients and found that the meannu

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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According to the American Time Use Survey, the typical American spends 183 minutes per day watching television. A college dean wondered if college students were different. He conducted a survey of 50 college students and found they had a mean of 165 minutes per day with a standard deviation of 72. To test this hypothesis, find P-value and rind to the nearest thousandth. Using the a=0.05, write a conclusion for the hypothesis test for question above, state whether or not you are rejecting hypothesis and what the hypothesis is in words, write a sentence that the researcher could share with colleagues without using technical terms for statistics
An exam score has a mean of 78 and a standard deviation of 9. What is the z-score for an exam score of 64.5? What is the z-score for an exam score of 82.5? Which exam score is more unsual, 64.5 or 82.5? O An exam score of 64.5 is more unsual because its corresponding z-score is further from 0. O An exam score of 82.5 is more unusual because its corresponding z-score is further from 0.
Assume the average amount of days a patient spends in hospital is believed to be 24 days and a hospital claims that their experience suggests that the average is actually lower. They randomly selected and followed 33 patients and found that the mean number of days was 21.5 with a standard deviation of 7.8. What is the test statistic and your conclusion for α=0.05?A. Test statistic: 1.841 Conclusion: Reject the null hypothesisB. Test statistic: -1.841 Conclusion: Reject the null hypothesisC. Test statistic: 1.841 Conclusion: Not enough evidence to reject the null hypothesisD. Test statistic: -1.841 Conclusion: Not enough evidence to reject the null hypothesis
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The average salary in this city is $46,700. Is the average different for single people? 53 randomly selected single people who were surveyed had an average salary of $48,860 and a standard deviation of $9,210. What can be concluded at the a = 0.05 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 H1: Select an er v answe c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. (Please show your answer to 4 decimal places.) g. Thus, the final conclusion is that .. O The data suggest that the sample mean is not significantly different from 46,700 at a = 0.05, so there is statistically insignificant evidence to conclude that the sample mean salary for singles is different from 48,860. O The data suggest that the population mean is not significantly different from 46,700…
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1 Jump to level 1 A pipes manufacturer makes pipes with a length that is supposed to be 11 inches. A quality control technician sampled 32 pipes and found that the sample mean length was 11.09 inches and the sample standard deviation was 0.2 inches. The technician claims that the mean pipe length is not 11 inches. What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.123 What is the number of degrees of freedom? Ex: 20 Does sufficient evidence exist at the a= 0.05 significance level to support the technician's claim? Select Check HIN 60°F
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Americans are about 1 inch taller but nearly 25 pounds heavier than in 1960. The average BMI increased from approximately 25 to 28 in 2002. Boston is considered one of americas healthiest cities. Is the weight gain since 1960 similar in boston? Sample of n=25 and mean increase of 17 with standard deviation of 8.6. Is boston statistically significantly different in terms of weight gain since 1960? Run the appropriate test at 5%level of significance. A.state the null and the research hypotheses, b. Idebtify critical values of z 9r t used to define the decision rule, c. Calculate the test statistic, d. Report the p-value, e. Report your findings
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