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The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals specializing in marketing (higher scores indicate higher ethical values).
Marketing Managers Marketing Research Advertising
6 5 6
5 5 7
4 4 6
5 4 5
a) Use α = .10 to test for significant differences in perception among the three groups.
b) At α = .10 level of significance, can we conclude that there are differences in the perceptions for marketing managers, marketing research specialists, and advertising specialists. Use Fisher's LSD approach to determine where the differences occur.
The following data set shows the ages of the first 7 presidents and the 7 most recent presidents including President Obama. Find the mean, median, and range for each of the two data sets.
In general how is the magnitude of the standard error of estimate related to the value of correlation?
The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. Nancy Bright's SAT score was 1390. What percentage of students have scores more than Nancy Bright?
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Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
A neuropsychologist compare the auditory abilities of blind versus normally sighted rats. He predicted that the visually impaired rats would have better auditory development than normally sighted rats.
because only two of the seven regression coefficients are statistically significant. Yet in some initial trials the expanded model is giving more precise sales predictions than the smaller model. The reasons for this anomaly are now being investig..
Explain five steps used in hypothesis testing. Be specific, using numerical examples as well as symbols and verbal explanations.
Suppose the world series is about to begin. Some people get together and each decide to predict different win-loss patterns for the seven possible games during the coming series.
Conduct an analysis of four management journal articles, at least two of which must be peer reviewed. The following must be included in my analysis:
In a study of human blood types in nonhuman primates, a sample of 71 orangutans were tested and 14 were found to be blood type B. Construct a 95% confidence interval for the population proportion of blood type B in the orangutan population.
Suppose that a random requisition is found to have been incorrectly entered. What is the probability that it was processed by data entry specialist 3?
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