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!
A sample of 400 orders for take-out food at a local pizzeria found that the average cost of an order was $25 with s=$18.
(a) Find the margin of error, if we use a 95% confidence interval, for the average cost of an order.
(b) Interpret for management the margin of error.
(c) If we need to be 99% confident, does the confidence interval become wider or narrower?
(d) Find the 99% confidence interval.
A customer service center has customers call with questions about the use of a product. The mean arrival rate of customer calls is 20 per hour and follows a Poisson distribution. The mean service rate (how long it takes the call center employee to an..
Find a function that models the brightness of the star as a function of time
Your store has an average of 40 customers per an eight hour shift. You need to know whether you should hire 1, 2, 3 or 4 salespersons. The waiting times is 15 minutes with one salesperson, 12 minutes with two, 10 minutes with three and 6 minute with ..
1. Do this exercise by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most?
The manager of a company wants to investigate job satisfaction among its employees. One morning after a meeting, she talks to all 25 employees who attend. Does this sampling plan result in a random sample? What type of sample is it? Explain
Pick a lottery game
The company SlimDown makes weight loss products.
How would you define research? What is the purpose of business research? How has the Internet changed the quality and quantity of research?
Jack weighs 160 pounds and his sister weighs 110 pounds. If themean weight for men his age is 175 with a standard deviation of 14pounds and the mean weight for women is 145 with a standarddeviation of 10 pounds, determine whose weight is closer to "a..
A randomized, controlled experiment investigated
We are evaluating the sheet metal scrap rate in a contractor proposal. Based on a sample of 28 parts you calculate a mean rate of 6.50% (treat as 6.50) and a standard deviation of 1.20. Calculate a 80% confidence interval to be used to support negoti..
AirTran Airways and Southwest Airlines were among the leaders in on-time arrivals, with both having 88% of their flights arriving on time. But for the 12% of flights that were delayed, how many minutes were these flights late? Sample data showing the..
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