Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Number of friends on Facebook. Pew Center's Internet and American Life Project recently reported that the average Facebook user has 245 friends.8 This distribution only takes integer values, so it is certainly not Normal. We'll also assume that it is skewed to the right with a standard deviation σ = 115. Consider an SRS of 30 Facebook users.
(a) What are the mean and standard deviation of the total number of friends in this sample?
(b) What are the mean and standard deviation of the mean number of friends per user?
(c) Use the central limit theorem to find the probability that the average number of friends among 30 Facebook users is greater than 275.
Provide one example of how a confidence interval could be used in a business, sports, health care, political, etc. environment. Please identify a level of confidence in your example (.90, .95, .99).
Classic Golf, Inc. manages five courses in the Jacksonville, Florida, area. The Director wishes to study the number of rounds of golf played per weekday at the five courses. He gathered the following sample information.
a rapid test for the presence in the blood of antibodies to hiv the virus that causes aids gives a positive result with
test the hypothesis using the classical approach and the p-value approach.ho p 0.45 versus hi p lt 0.45n 150 x 62 a
On a given day what is the probability that at least two computers will not be working? - What assumptions do your answers in parts a and b require? Do you think they are reasonable? Explain.
Provide an explanation for why profits might not be a good indicator for deadweight loss. What about if profits were persistently positive in an industry?
Suppose the federal government proposes to give a substantial tax break to automakers producing midsize cars that get a mean mileage exceeding 31 mpg.
An insurance company, based on past experience, estimates the mean damage for a natural disaster in its area is $5,000. After introducing several plans to prevent loss
Develop the tools necessary to educate project participants and to evaluate project outcomes (surveys, questionnaires, teaching materials, PowerPoint slides, etc.).
Treating Chronic Fatigue Syndrome Patients with chronic fatigue syndrome were tested, then retested after being treated with fluorocortisone.
what is the value of y when x 3 if the equation of the regression line is y 23.1 - 3.8x ?a. 4.73b. 5.29c. 34.5d.
Construct a 99% confidence interval (Konfidenz interval) for the difference in proportions of all adults and all teenagers who watched the program and liked it.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd