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!
'Churn' is a term used to describe the rate at which a company loses customers to its competitors. In the telecommunications industry, it is believed that the churn rate between cellphone service providers (e.g. Vodacom, MTN, Virgin Mobile, 8.ta and Cell C) is not more than 15%.
A telecommunications analyst surveyed a random sample of 560 cellphone subscribers and found that 96 of them had changed service provider within the past year.
(a) Is there sufficient statistical evidence at the 10% significance level to conclude that the churn rate in the telecommunications industry exceeds 15%? Perform a hypothesis test for a single proportion and report the findings.
(b) Use the NORMSDIST function in Excel to compute the p-value for the test. Interpret the findings for the telecommunications analyst.
(c) Confirm the p-value found in (b) by using Excel's NORMDIST function.
the weights of ripe watermelons grown at mr. smiths farm are normally distributed with a standard deviation of 2.7 lb.
Exploitron, Inc. conducts a random survey of 700 of their workers and finds that the average employee earns $31,782 per year, with a standard deviation of $622. The Census reports that the average American worker makes $30,059. The CEO of Exploitron ..
what are the three most important things you learned about sampling? write 5 sentences
What conclusions can you draw from these analyses - What conclusions can you draw from these measures - Calculate the Mean
1. Using the Internet resources, find an example of a linear optimization model used in industry. Describe which industry it is or was used in and briefly discuss the problem or challenge it addressed.
The next day, Elle visited an attorney to begin divorce proceedings. Aftersome small talk, the attorney, Mark Smithson, asked Elle about the major assets accumulated during the marriage.
an investigator wishes to determine if there are any differences in the level of blood pressure as a function of
q1. a pistachio rancher buys a new fertilizer system that is supposed to increase the yield per acre. she uses
What is the probability density function for this uniform distribution?
Does the Law of Large Numbers allow us to predict the proportion of heads that will turn up in the long run? After we have observed a large number of tosses, can we tell which coin was chosen? How many tosses suffice to make us 95 percent sure?
a sample of shoppers was selected and asked questions regarding consumer behavior. one of the questions asked was do
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
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