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Professor Brunner had students in his Marketing class rate his performance as Excellent, Good, Fair, or Poor. A graduate student collected the ratings and assured the students that Professor Brunner would not receive them until after the course grades had been submitted. The rating (the treatment) a student gave the professor was matched with his/her course grade, which could range from 0 to 100. the data is as follows:
Excellent Good Fair Poor
94 75 70 68
90 68 73 70
85 77 76 72
80 83 78 65
88 80 74
68 65
65
Is there a difference in the mean scores of the students in each of the four rating categories at a 99% confidence level?
In teaching the role of statistical application in Health Science, the importance of reliable and valid data is very critical in research process.
Below are scores for 10 randomly selected students on each exam. 95% confidence interval for the mean scores on?
a) yes, because the tst value -3.46 falls in the noncritical region. b) no, because the test value -1.98 falls in the critical region. c) yes, becasue the test value -3.46 falls in the critical region. d) no because the tst value -1.98 falls in the n..
Based on this sample, is Moe correct in his assertion? Write up formal commentary of results of your test.
A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that
Elucidate this data use an appropriate statistical test to explain whether the population mean TV "on" time has declined in the past decade.
I did a study correlating net profit per location with expenditures on an in-house promotion, and got a correlation of about .15, and that was received very well.
Assume that the mean parameter θ for the RV L is unknown. To estimate it, a random sample of n = 10 light bulbs is selected, and the lifetime of each light bulb is measured. Let X denote the number of those 10 sampled light bulbs that burn longer ..
Run a simple regression of the dependent variable demand on the independent variable price and observe the coefficient on price.
A frequency polygon: does not depend on one variable. True-False
You are picking up apples from a tree in a park. You are interested in estimating the mean weight of all apples in the park. Unfortunately you have only been able to find seven apples so far. Can you use the Central Limit Theorem to aid in your es..
Data analysis must be completed using a statistical software package - either Statistix for Windows, with the MegaStat add in, SPSS, SAS, R or any other legitimate software package.
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