Elementary Statistics - Excel Statistics Laboratory Manual
13th Edition
ISBN: 9780134464275
Author: Triola
Publisher: PEARSON
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Chapter 11.1, Problem 12BSC
In Exercises 5–20, conduct the hypothesis test and provide the test statistic and the P-value and /or critical value, and state the conclusion.
12. Police Calls Repeat Exercise 11 using these observed frequencies for police calls received during the month of March: Monday (208); Tuesday (224); Wednesday (246); Thursday (173); Friday (210); Saturday (236); Sunday (154). What is a fundamental error with this analysis?
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Chapter 11 Solutions
Elementary Statistics - Excel Statistics Laboratory Manual
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- I need help identifying the p- value of this hypothesis testarrow_forwardWhich of the elements of a test of hypothesis can and should be specified prior to analyzing the data that are to be used to conduct the test?arrow_forwardCan you help me determine the test statistic, the P-value, and the conclusion for this hypothesis test?arrow_forward
- Exercises 17–20 are based on data sets included in Appendix B. The complete data sets can be found at www.TriolaStats.com In Exercises 5–20, conduct the hypothesis test and provide the test statistic and the P-value and/or critical value, and state the conclusion. M&M Candies Mars, Inc. claims that its M&M plain candies are distributed with the following color percentages: 16% green, 20% orange, 14% yellow, 24% blue, 13% red, and 13% brown. Refer to Data Set 27 “M&M Weights” in Appendix B and use the sample data to test the claim that the color distribution is as claimed by Mars, Inc. Use a 0.05 significance level.arrow_forwardAccording to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a lower proportion of identity theft than 23%? Test at the 5% level. viii) Comparing p-value and α value, which is the correct decision to make for this hypothesis test? A. Reject H B. Fail to reject Ho C. Accept Ho D. Accept HA Enter letter corresponding to correct answer. (ix) Select the statement that most correctly interprets the result of this test: A. The result is statistically significant at .05 level of significance. Evidence supports the claim that the proportion of complaints due to identity theft in Alaska is less than 23%. B. The result is statistically significant at .05 level of significance. There is not…arrow_forwardWill the critical value approach and the p-value approach return the same conclusion for a hypothesis test?arrow_forward
- . At the 5% significance level, determine if the model is useful for predicting the number of weekly riders on public buses. In responding, construct and test any appropriate hypothesisarrow_forward1)Remove the four potential outliers of 0, 0, 8, and 20, and then obtain a new histogram without the outliers. Does the data appear to be normally distributed now? 2)Assuming that the four potential outliers of 0, 0, 8, and 20 are not recording errors, repeat the hypothesis test from part (c) (again setting up the hypothesis test and using either the critical value or p-value approach), and compare your results with that obtained in (c). Did you make a different conclusion? 3)Imagine you know have to make a recommendation/conclusion to the company that hired you: Assuming that the four potential outlies are not recording errors, and looking at the two results above, would you recommend using the first test with the outliers or the second test with the outliers removed? There is no right or wrong answer here, I am interested in what you think and your reasoning.arrow_forwardIn 2002, NCHS reported that 75% of children age 2-17 saw a dentist in the past year. An investigator in Boston decided to assess the dental services for children in that area. A sample of 125 children age 2-17 were surveyed and 64 reported seeing a dentist. Assuming that the sample size is adequate, use the five-step hypothesis testing procedure to determine if there is a significant difference in the proportion of children living in Boston who use dental services as compared to the national proportion.arrow_forward
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