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Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study to the Discussion Area. Present the rationale for each selection. Be very specific in your presentation.
To determine the public's opinion of the police department, the police chief obtains a cluster sample of 15 census tracts within his jurisdiction and samples all households in the randomly selected tracts. Uniformed police officers go door to door..
A large university says the mean number of classroom hours per week for full-time faculty is more than 9. A random sample of the number of classroom hours for full-time faculty for one week is listed. At 945; = 0.05 , test the university's claim.
The heights of young women are approximately normal with mean 65 inches and standard deviation 2.5 inches.
How many subjects would you approximately need to reduce the length of the 95% confidence interval to 2 units?
The moment generating function of normal distributed random variable ,Y, with mean and variance .derive the moment generating function of X=-3Y+4.what is the distribution of X? why?
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
Using ANOVA summary table, find out if regression model is significant.
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard deviation was 5.0.
Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer. Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H 0 , H 1 and for..
The dean of a nursing school claims that the average starting salary of its graduates is more than 60 (in $000's). It is known that the population standard deviation is 10 (in $000's).
The accountant will use a sample of weekend guest bills to test the manager's claim. Which form of the hypotheses should be used to test the manager's claim? Explain.
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