Smallpox Vaccine.ABCNEWS.com published the results of a poll that asked U.S. adults whether they would get a smallpox shot if it were available. Sampling, data collection, and tabulation were done by TNS Intersearch of Horsham, Pennsylvania. When the risk of the vaccine was described in detail, 4 in 10 of those surveyed said they would take the smallpox shot. According to the article, “the results have a three-point margin of error” (for a 0.95 confidence level). Use the information provided to obtain a 95% confidence interval for the percentage of all U.S. adults who would take a smallpox shot, knowing the risk of the vaccine.

In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1081 working adults spread over three generations-Baby Boomers, Generation X, and Millennials (Society for Human Resource Management website). One question asked individuals if they would leave their current job to make more money at another job. The file Millennials contains the sample data, which is also summarized in the following table. Click on the datafile logo to reference the data. DATA file Leave Job for More Money? Yes No Baby Boomer 137 213 Generation 7.85 What is the p-value? Use Table 3 of Appendix B. The p-value is between 0.005 and 0.01 Using a 0.05 level of significance, what is your conclusion? Conclude interest in leaving job for more money is not Generation X 171 199 Millennial 175 186 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. Compute the value of the X² test statistic (to 2 decimals). Do…

Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the viewing audience in the area. In a survey of 100 viewers, 47% indicated that they watch the late evening news on this local CBS station. What is the test statistic?

Describe how nonresponse might lead to bias in this survey. Does the stated margin of error account for this possible bias? People who have longer travel times to work might have less time to respond to a survey. This would cause our estimate from the sample to be greater than the true mean travel time to work. The bias due to nonresponse is not accounted for by the margin of error. People who have longer travel times to work might have less time to respond to a survey. This would cause our estimate from the sample to be less than the true mean travel time to work. The bias due to nonresponse is not accounted for by the margin of error. People who have longer travel times to work might have less time to respond to a survey. This would cause our estimate from the sample to be less than the true mean travel time to work. The bias due to nonresponse is accounted for by the margin of error. People who have longer travel times to work might have less time to respond to a survey.…