A survey of 93 men found that an average amount spent on St. Patrick's day of $51 with a standard deviation of $16. A similar survey of 87 women found they spent an average of $44 with a standard deviation of $18. When testing the hypothesis (at the 5% level of significance) that men spend more than women on St. Patrick's day, what is the test statistic? (please round your answer to 2 decimal places)
A survey of 93 men found that an average amount spent on St. Patrick's day of...
QUESTION 10 In a national survey, it was found that men spend on average at most 30 minutes per day on weekends and holidays playing sports. A random sample of 25 men resulted in a mean of 35.4 minutes playing sports with a standard deviation of 3.5 minutes. At a -0.10, test the claim that men spend on average at most 30 minutes per day on weekends and holidays playing sports. (Assume the population is normally distributed.) What is the...
In the 2016 General Social Survey, subjects reported the time spent every day watching television. Men reported watching an average of 5.3 hours per day and women reported watching an average of 4.1 hours per day. The difference in means is 1.2 and the associated standard error of the difference is .191. (a) If you hypothesize that men and women’s average amount of television per day differs significantly, set up the null and alternative hypotheses for a significance test. (b)...
(7.5 points) According to a recent study, the average American spent $10,345 on health care in 2016. A researcher wants to know if the amount of money residents in Louisville spend on health care is different than this national average. A survey of 300 randomly selected residents found that they spent an annual average of $9,730 on health care in 2016 with a standard deviation of $8,227. The researcher plans to run a hypothesis test at a 5% level of...
A survey of 500 randomly chosen adults found that 30% of the 300 men and 20% of the 200 women had purchased books online. You are to test the hypothesis that online rates are the same for men and women. What is the p-value of your test of significance?
A survey of 500 randomly chosen adults found that 20% of the 300 men and 15% of the 200 women had purchased books online. You are to test the hypothesis that online rates are the same for men and women. What is the p-value of your test of significance?
In a survey of 177 publicly-traded companies, the average price-earnings ratio was 18 with a standard deviation of 8.6. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past value of 16.3, what is the test statistic? (please round your answer to 2 decimal places)
A study conducted by the American Heart Association found that the average American exercises vigorously for an average of 17 minutes per day, with a standard deviation of 1.2. A researcher who works with women with health issues wants to determine if the group is different than the national average. The researcher finds that his group of 25 women exercises 15 minutes per day. Assume normal distribution and test at a 0.05 level of significance (a = .05). 1. State...
14. According to a survey, the average college student spends only 2.2 hours on homework per day in the year 2000. To test if the amount of time spent on homework per day differed last year from 2000, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 25 college students randomly and asks them about the number of hours they spend on homework per day, on average, last year. From the data, the sample...
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the listening time for a sample of 11 men was 41 minutes per day. The standard deviation was 17 minutes per day. The mean listening time for a sample of 10 women was also 41 minutes, but the standard deviation of the sample was 9 minutes. At the 0.10 significance...
In a survey of 173 publicly-traded companies, the average price-earnings ratio was 18.3 with a standard deviation of 7.9. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past value of 16.6, what is the test statistic? (please round your answer to 2 decimal places)