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?
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Elementary Statistics (nasta Edition), 13th Edition
Additional Math Textbook Solutions
Elementary Statistics Using Excel (6th Edition)
Applied Statistics in Business and Economics
The Practice of Statistics for AP - 4th Edition
Business Analytics
Research Methods for the Behavioral Sciences (MindTap Course List)
Statistics for Business & Economics, Revised (MindTap Course List)
- 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_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_forwardExample (H.W.): Find the mean and variance from the m. g. f.of binomial distribution.arrow_forward
- Example (H.W.): Find the mean and variance from the m. g. f. of binomial distribution.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_forward6 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_forward
- Engineering data analysis show solutionarrow_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
- Derive the mean and variance of the t distribution.arrow_forwardIV. Exercises: Find the Mean, variance and the standard deviation of the following probability distribution. x p(x) x.p(x) P(x) 0.238 2 0.290 0.177 0.158 0.137 Find: p= ? o2 = ? O = ? 34arrow_forwardUsing the chi-square test to determine whether a bowling score is independent of age and RH vs. LH LH RH 10-19 110 105 20-29 115 110 30-39 120 115 A. find expected values B. find the test-statisticsarrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill