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1. Assume you have used online service such as Orbitz or Travelocity to make an airline reservation. The following day you receive an e-mail containing a questionnaire asking you to rate the quality of the experience. Discuss both the advantages and disadvantages of using this form of questionnaire delivery.
2 .If the manager at First City Bank surveys a sample of 100 customers to determine how many miles they live from the Bank, is the mean travel distance for this sample considered a parameter or a statistic? Explain.
Adriana Corporation manufactures football equipment. In planning for next year, the managers want to understand the relation between activity and overhead costs.
In a sample of 55 mice, a biologist found that 42% were able to run a maze in 30 second or less. Find the 90% limit for the population proportion of mice who can run a maze in 30 second or less.
Find the margin or error for the 95% confidence interval used to estimate the population proportion. In a survey of 7100 TV viewers, 38% said they watch network news programs.
What is the probability of this actually happening?
A processor of carrots cuts green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test weight of the boxes, a few were checked.
Calculate the test statistics
Compute test statistic and p -value for each sample. (Negative amount must be pointed out by minus sign.)
Confirm that these statements are accurate by finding the geometric mean rate of increase.
When investigating the distribution of a data set, which is more effective: a frequency distribution or a histogram? Why?
A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold.
Suppose the population standard deviations are not the same. At.05 significance level, is there a difference in mean waiting time?
A pharmaceutical company has developed a drug that is expected to reduce hunger. To test the drug, three samples of rats are selected with n=10 in each sample.
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