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The personnel director of Cander Machine Products is investigating perfectionism on the job. A test designed to measure perfectionism was administered to a random sample of 18 employees. The scores ranged from 20 to about 40. One of the facets of the study involved the early background of each employee.
Did the employee come from a rural background, a small city, or a large city? The scores are in the table below.
Rural Area Small Urban Area Large Urban Area
35 28 24
30 24 28
36 25 26
38 30 30
29 32 34
34 28
31
a. At the .05 level, can you conclude there is a difference in the three mean scores?
b. If the null hypothesis is rejected, can you state that the mean score of those with a rural background is different from the score of those with a large-city background?
Find out the finite population correction (FPC).With a population size of 1,000 and a planned sample size of 200, what is the finite population correction.
Compute the probability for the given frequency distribution.
Conduct a mini-meta-analysis. There is really no such thing as a mini-meta-analysis, but you don't have time to conduct a full meta-analysis.
Based on the sample findings, estimate the true mean of Saturday sales with 90% probability.
John, a medical practitioner at a private medical facility, is discussing the problem that one of his patients, Tom, says he has been having with the medication that the doctor has prescribed.
A quality engineer in a light bulb manufacturing factory is planning a study to estimate the average life of a large shipment of light bulbs.
A school administrator randomly selects 12 classes from your school and then selects all of the students of those classes to study a school library issue. Which type of sampling design is being used.
A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time.
What is the probability that an improperly adjusted machine will produce five or more items before it is stopped? What is the average number of items an improperly adjusted machine will produce before being stopped?
Find out the probability that a student from the whole school system, chosen at random, has passed?
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
Provide a brief description of the main features of these data from the scatter plot and Describe why you would use performance as the predictor variable and performane related pay as the dependent variable in such a model.
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