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Assume that another counselor decided to extend the aforementioned study by collecting data on 14 children. His study yielded the following results:
Racial Attitude and Preference Test Scores (X)
2 4 2 5 7 8 12 14 14 16 18 18 20 20
Racial Socialization Test Scores (Y)
4 6 8 10 14 12 14 11 16 10 12 6 6 4
Calculate and interpret the slope, y intercept, regression equation, regression coefficient, and coefficient of determination.
He will then compare the season batting averages of group A (those with ballet training) and group B (those without ballet training) by comparing the mean of group A with the mean of group B.
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
One environmental group did a study of recycling habits in a California community. It found that 73% of the aluminum cans sold in the area were recycled. (Round your answers to four decimal places.)
Which of the following is not an advantage of using a cluster sample instead of other types of samples?
Suppose that the mean systolic blood pressure of normal adults is 120 millimeters of mercury (mm Hg) and the standard deviation is 5.6. Assume the variable is normally distributed.
If you are told a population has a mean of 25 and a variance of 0, what must you conclude? a) Someone has made a mistake. b) There is only one element in the population.
Determine the average score for ERAU graduates? Determine the value of test statistic? Significance level?
Solve manually and then by mega stat. Indicate your decision rule, your hypotheses and your statistical and management conclusions."
What are the differences between regression and correlation analysis? What is correlation? Does correlation prove causation? Why or why not? Explain and provide examples to support your explanation.
Find the average age at which people will experience their first cardiac incident, given that 17% of all initial cardiac incident victims are younger than 50. Please, interpret the result.
What is the probability that the mean contents of a six-pack are less than 12 ounces and what is the chance I find at most two defectives in the sample
Find the test statistic . Find the standardize test statistic. decide whether the standardize test statist is in the rejection region and decide whether you should reject or fail to reject the null. Sample are random and independent. Claim u1 =u2,..
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