QNT 561 Final Exam Guide (New, 2017) NEW

QNT 561 Final Exam Guide (New, 2017) NEW

http://www.assignmentcloud.com/qnt-561-uop/qnt-561-final-exam-guide-new

1. James Desreumaux, VP of Human Resources of American First Banks (AFB), is reviewing the employee training programs of AFB banks. His staff randomly selected personnel files for 100 tellers in the Southeast Region and determined that their mean training time was 25 hours. Assume that the population standard deviation is 5 hours. The 95% confidence interval for the population mean of training times is

2. If x is a binomial random variable with n=10 and p=0.8, the mean value of x is______

3. According to the central limit theorem, for samples of size 64 drawn from a population with µ =800 and σ = 56, the standard deviation of the sampling distribution of sample means would equal ______

4. Life tests performed on a sample of 13 batteries of a new model indicated: (1) an average life of75 months, and (2) a standard deviation of 5 months. Other battery models, produced by similar processes, have normally distributed life spans. The 98% confidence interval for the population mean life of the new model is _________

5. A large national company is considering negotiating cellular phone rates for its employees Human Resource department would like to estimate the proportion of its employee population who own an Apple iPhone. A random sample of size 250 is taken and 40% of the sample own and iPhone.. The 95% confidence interval to estimate the population proportion is _______

6. The number of bags arriving on the baggage claim conveyor belt in a 3 minute time period would best be modeled with the ________