Concept explainers
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
17. Births A random sample of 860 births in New York State included 426 boys. Use a 0.05 significance level to test the claim that 51.2% of newborn babies are boys. Do the results support the belief that 51.2% of newborn babies are boys?
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- Complete 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_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_forward
- Binomial 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_forwardHypertension It has been found that 26% of men 20 years and older suffer from hypertension (high blood pressure) and 31.5% of women are hypertensive. A random sample of 136 of each gender was selected from recent hospital records, and the following results were obtained. Can you conclude that a higher percentage of women have high blood pressure? Use a =0.10. Men 50 patients had high blood pressure Women 63 patients had high blood pressure for the proportion of men with high blood pressure and round all intermediate calculations to at least three decimal places. Use P1arrow_forward
- 6 Joan records the temperature every day. The highest temperature she recorded was 29 °C to the nearest degree. Let X represent the error in the measured temperature. a Suggest a suitable model for the distribution of X. b Using your model, calculate the probability that the error will be less than 0.2°C. e Find the variance of the error in the measured temperature.arrow_forwardQUESTION: Investigate and explain about t- distribution and then provide 2 examples and solve it by using the table.arrow_forwardEagles always lay three eggs at a time. The number of eggs that hatch is described by the following probability distribution: 1. P(X = x) 0.1 0.3 0.4 0.2 Find the mean, variance and standard deviation. Write your solution on your paper. 3.arrow_forward
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill