According to a recent report, after 5 years on the job, American workers get an average of 24 days of paid holidays and vacation leave each year. The number of days of paid holidays and vacation leave taken by a random sample of 35 workers in the American textile industry were observed. The average number of days of paid holidays and vacation leave in the sample was 20.51 with a sample standard deviation of 9.13 days . Is there evidence in the data that the mean vacation leave for textile workers is no different from the mean of all American workers? Conduct an appropriate test to answer, including the p-value (α = 0.05)
According to a recent report, after 5 years on the job, American workers get an average...
According to recent data from the Census Bureau, the average one-way commute time for American workers ages 16 and over is 27.6 minutes. Is the average commute time longer in the state of Georgia? Researchers collected a random sample of 44 Georgia residents ages 16 and over who work outside the home. The average commute time in this sample was 28.8 minutes. (a) State the appropriate hypotheses to test if the average commute time in Georgia is longer than that...
According to the U.S. Bureau of Labor Statistics, all workers in America who had a bachelor’s degree and were employed earned an average of $1234 a week in 2014. A recent sample of 392 American workers who have a bachelor’s degree showed that they earn an average of $1250 per week. Suppose that the population standard deviation of such earnings is $134. a. Find the p-value for the test of hypothesis with the alternative hypothesis that the current mean weekly...
According to a travel website, workers in a certain country lead the world in vacation days, averaging 21.02 days per year. The following data show the number of paid vacation days for a random sample of 20 workers from this country. Complete parts a through c below. 6 8 9 13 18 22 29 16 28 17 23 26 34 30 30 38 56 a. Construct a 95% confidence interval to estimate the average number of paid vacation days for...
help with this questions and its parts
According to USA Today, workers in Germany lead the world in vacation days, averaging 2001 days per year. The following data show the number of pa c tion days for a random sample of 20 workers from this country. Complete parts a Construct a 99% confidence interval te estimate the average number of paid vacation days for workers from this country The 99% confidence terval to estimate the average number of paid vacation...
In recent years in Greece, the job tenure (average number of years workers work in the same company) was highest in Europe. And many economists think that this was one of the problems behind the depression, and they argue that the Greek government should adopt policies to reduce job tenure. If you were given the task to develop such policies, what might be one policy you might suggest?
1. According to a recent report, 38% of adults wait until they are 30 years of age or older to get married for the first time. A researcher believes this claimed value is too low. He gathers data in order to test the hypotheses Ho: p = 0.38 vs. Ha: p > 0.38. In these hypotheses, what does p represent? A. The p-value B. The sample proportion C. The population proportion D. The sample mean E. The population mean 2....
Question 4 (1 point) Saved According to a Nielsen report, the average age of an audience watching American Idol Season 8 was 40.3 years with σ = 6 years. A random sample of 100 audiences for the Season 9 show yielded a mean age of 42.2 years. Use a hypothesis test to determine if the population mean age of audience for American Idol has increased, using α = 0.05. Question 4 options: a) p-value = 0.0008, reject H0. b) p-value...
According to a survey, the average American person reads for 3 hours per week. To test if the amount of reading in Chicago is more than the national average, a researcher decides to do a hypothesis test, at a 5% significance level. She surveys 17 Chicagoans randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 3.4 hours per week, and the sample standard deviation (s) is 0.8 hours....
According to a report issued by the CDC in 2013, 66.8 % of women
40 years of age and over had a mammogram within the last two years.
An oncologist at the CDC would like to know if there has been a
change in this percentage over the last two years. A random sample
of 749 women (40 and older) is taken, and each is asked the date of
their last mammogram.
Verify that the assumptions have been satisfied to...
5. According to the 2010 US Census, the average number of residents per housing unit for the n=87 counties in Minnesota was 2.10, and the standard deviation was 0.38. Test whether the true mean number of residents per housing unit in Minnesota in 2010 is less than the national value of 2.34 at the level α = 0.05. a. Show all five steps of this test. b. What type of error could we be making in this context? c. What...