Question

In: Statistics and Probability

US News publishes annual statistics based on the performance and demographic data reported for major universities....

  1. US News publishes annual statistics based on the performance and demographic data reported for major universities. Suppose this year, US News releases its publication and finds that only 6% of students at a particular university consider themselves African-American. The response at the University was outrage, and a local student group conducted a comprehensive survey in order to correct the publication that they believe was flawed. Suppose that, out of a sample of 3,496 students, the university found that 487 identified as African-American.

Conduct a formal test to determine if the proportion of students identifying as African-Americans differs significantly from the proportion published in US News. Use an α=0.05. Be sure to include each of the four steps of hypothesis testing. Do not use excel.

Solutions

Expert Solution

Dear your satisfaction is more important, I provided answers with detailed explanation. If you are satisfied with my explanations please THUMBS UP.. Thanks inadvance for your support dear....


Related Solutions

According to statistics reported on news source, a surprising number of motor vehicles are not covered...
According to statistics reported on news source, a surprising number of motor vehicles are not covered by insurance. Sample results, consistent with the news report, showed 104 of 400 vehicles were not covered by insurance. (a) What is the point estimate of the proportion of vehicles not covered by insurance? (b) Develop a 95% confidence interval for the population proportion. (Round your answer to four decimal places.) to
According to statistics reported on news source, a surprising number of motor vehicles are not covered...
According to statistics reported on news source, a surprising number of motor vehicles are not covered by insurance. Sample results, consistent with the news report, showed 48 of 200 vehicles were not covered by insurance. (a) What is the point estimate of the proportion of vehicles not covered by insurance? (b) Develop a 95% confidence interval for the population proportion. (Round your answer to four decimal places.) ___to___
According to statistics reported on news source, a surprising number of motor vehicles are not covered...
According to statistics reported on news source, a surprising number of motor vehicles are not covered by insurance. Sample results, consistent with the news report, showed 34 of 200 vehicles were not covered by insurance. A. What is the point estimate of the proportion of vehicles not covered by insurance? B. Develop a 95% confidence interval for the population proportion. (Round your answer to four decimal places.)
Name a US government agency that publishes data of CPI and unemployment and provide a URL...
Name a US government agency that publishes data of CPI and unemployment and provide a URL link for each of the two variables that leads you to the data. Calculate the inflation rate between year a) 1999 and 2000, b) 2000 and 2001 given the following CPI: CPI (1999)= 89, CPI (2000)=100, CPI (2001)=107 Suppose the nominal output of year 1999 was $3200 and the real output of year 1999 was $3600, calculate the GDP deflator of year 1999. Suppose...
#2) Based on data from the Bureau of Labor Statistics, in 2015 the mean annual salary...
#2) Based on data from the Bureau of Labor Statistics, in 2015 the mean annual salary for a registered nurse was $71,000 with a standard deviation of $1,140. Assuming that the salaries are normally distributed, find the probabilities indicated in parts a and b. Show your work to calculate the necessary z-scores, include a sketch showing the corresponding areas under the standard normal curve (similar to those shown on page 239), and use the standard normal distribution curve in the...
The National Restaurant Association publishes an annual    industry factbook that can be found at www.restaurant.org. Based...
The National Restaurant Association publishes an annual    industry factbook that can be found at www.restaurant.org. Based on information in the latest report, does it appear that macro-environmental factors and the economic characteristics of the industry will present industry participants with attractive opportunities for growth and profitability? Explain.
According to statistics reported on news source, a surprising number of motor vehicles are not covered by insurance.
According to statistics reported on news source, a surprising number of motor vehicles are not covered by insurance. Sample results, consistent with the news report, showed 63 of 300 vehicles were not covered by insurance (a) What is the point estimate of the proportion of vehicles not covered by insurance? (b) Develop a 95% confidence interval for the population proportion. 
According to statistics reported on news source, a surprising number of motor vehicles are not covered by Insurance
According to statistics reported on news source, a surprising number of motor vehicles are not covered by Insurance. Sample results, consistent with the news report, showed 64 of 400 vehicles were not covered by Insurance (a) What is the point estimate of the proportion of vehicles not covered by Insurance? (b) Develop a 95% confidence interval for the population proportion
The Federal Reserve System publishes data on family income based on its Survey of Consumer Finances....
The Federal Reserve System publishes data on family income based on its Survey of Consumer Finances. When the head of the household has a college degree, the mean before-tax family income is $ 84,800. Suppose that 62% of the before-tax family incomes when the head of the household has a college degree are between $74,900 and $94,700 and that these incomes are normally distributed. What is the standard deviation of before-tax family incomes when the head of the household has...
The Federal Reserve System publishes data on family income based on its Survey of Consumer Finances....
The Federal Reserve System publishes data on family income based on its Survey of Consumer Finances. When the head of the household has a college degree, the mean before-tax family income is $ 85,000. Suppose that 56% of the before-tax family incomes when the head of the household has a college degree are between $75,100 and $94,900 and that these incomes are normally distributed. What is the standard deviation of before-tax family incomes when the head of the household has...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT