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Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, or critical value(s), then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Use the P-value method unless your instructor specifies otherwise. Use the
15. Survey Return Rate In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 5000 subjects randomly selected from an online group involved with ears. 717 surveys were returned. Use a 0.01 significance level to test the claim that the return rate is less than 15%.
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- Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year (1) Previous Year (2) 1458 1800 Occupied Rooms (X) 1470 Total Rooms (n) 1750 Formulate the hypothesis test can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Oa. Ho: p1=p2 vs Ob. Ho: p1> p2 vs Oc. Ho: p1=p2 vs Od. Ho: p1=p2 vs Ha: p1>p2 Ha: p1=p2 Ha: p1arrow_forwardIn Exercises 13–20, determine whether the data are from a discrete or continuous data set. Smartphones Students in a statistics class record the exact lengths of times that they surreptitiously use their smartphones during class.arrow_forwardProbability & Statistics Q3.124arrow_forwardQUESTION: Investigate and explain about t- distribution and then provide 2 examples and solve it by using the table.arrow_forwardComplete the table below and find the variance and standard deviation of the ff. probability distribution. (Answer should be in yellow pad.) V. ASSESSMENT 1. x•P(x) X2•P(x) P(x) 3/10 10 2/10 2/10 2/10 4 25arrow_forwardLarge Data Sets from Appendix B. In Exercises 25–28, use the data set from Appendix B to test the given claim. Use the P-value method unless your instructor specifies otherwise. Diastolic Blood Pressure for Men Repeat the preceding exercise for adult males instead of adult females.arrow_forwardExample (H.W.): Find the mean and variance from the m. g. f. of binomial distribution.arrow_forwardNominal Data. In Exercises 9–12, use the sign test for the claim involving nominal data. Births A random sample of 860 births in New York State included 426 boys and 434 girls. Use a 0.05 significance level to test the claim that when babies are born, boys and girls are equally likely.arrow_forwardBinomial distribution probability is based on a. Mean and standard deviation Ob. Number of trials and probability of success Oc. Standard deviation and number of success Od. Mean and probability of successarrow_forwardTesting Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, or critical value(s), then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Use the P-value method unless your instructor specifies otherwise. Use the normal distribution as an approximation to the binomial distribution, as described in Part 1 of this section. Medication Usage In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication (based on data from “Use of Prescription and Over-the-Counter Medications and Dietary Supplements Among Older Adults in the United States,” by Qato et al., Journal of the American Medical Association, Vol. 300, No. 24). Use a 0.01 significance level to test the claim that more than 3/4 of adults use at least one prescription medication. Does the rate of prescription use…arrow_forwardIn the real world, what kinds of data are distributed in the shape of a bell curve? Cite examples of how the Bell Curve has been used that you think are good, or bad, or neutral.arrow_forwardPoint ENTRY CARD Compute the variance of this frequency distribution. Score Number of Students 3. 8 10 4 12 15 Follow the steps given below. Complete the tables shown for each step. Steps 1. Compute the mean by using the Solution Number of formula X=EX Score %3D Students fX 3 8. 10 4 12 15 3 n= 20arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillCalculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,