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Technology and the Internet Based on test results, Speedtest.net publishes an Internet download index for countries all over the world. In July 2013, the mean download speed for the entire world was 13.91 Mbps.21 A random sample of states was obtained and the download index for each was recorded.
Assume the underlying population is normal and that σ = 3.4. Is there any evidence to suggest that the download speed for the United States is greater than the world population mean? Use a = 0.01.
Determine the degree of freedom, find the critical value, and identify the rejection region. Calculate the test statistic. If convenient, use the technology.
At the 0.025 level of significance, evaluate management's claim of random selection. Using the chi-square table in Appendix A, what is the most accurate statement that can be made about the exact p-value for the test?
a company has developed a new deluxe aaa battery that is supposed to last longer than its regular aaa battery. however
Find the slope and vertical axis intercept of the linear function
Given a positively skewed distribution with a median of 10 and a mode of 8. Which of the following is not a possible value for the mean?
What sort of conclusion did Kent Pekel come to in his discussion of integrity and ethics at the CIA? What are his recommendations?
q1. listed below is the net sales in million for home depot inc. and its subsidiaries from 1993 to 2004.yearnet
a physician claims that 13.6 of all pregnant females smoke during their pregnancy. a random sample of 400 pregnant
Reconsider Prob. 22.6-4. Suppose now that more careful statistical analysis has provided new estimates of the probability distributions of the radii of the shafts and bushings.
A multiple regression equation for list price of homes in certain community in USA is=170,000 -850 X 1 + 28,000 X 2 , where X 1 signifies age in years and X 2 signifies number of rooms.
question a dart hits a dartboard that is in the shape of a square with sides of 4m. there are four congruent circles
Find the probability P(r) of r successes ranging from 0 to 4. Make a histogram for the probability distribution of part (a). What is the expected number of parolees in Alice's group who will not be repeat offenders? What is the standard deviation?
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