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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 Area35 28 2430 24 2836 25 2638 30 3029 32 3434 2831
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?
Solve each compound inequality. State the solution set using interval notation and graph it.
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If this study involved a repeated measures design (within subjects) comparing conditions with the same number of participants, how many participants would be in each group?
Category of decision rule which contains maximax decision rule is?
Solve the following system of linear inequalities by graphing.
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 6.0 emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution.
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
The number of students that enroll in a psychology course is a poisson random variable with mean 100.the course incharge has decided that if the enrolling is 120 or more he will teach the course in two separate sections.
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
In these questions we have to make a decision about the given claim. For example, if the claim is that a coin favors heads and sample results consists of 11 heads in 20 flips, conclude that there is not sufficient enough evidence to support the cl..
What is the probability that the person thinks that "Made in America" ads boost sales and uses social media online?
Determine the mean and standard deviation of following probability distribution.
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