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1.7 0.7 -0.1 -0.7 -3.5 14.9 3.5 17.1 -7.6 1.6
11.7 6.1 1.1 -4.0 20.9 -9.1 2.1 -1.4 1.4 -0.3
-3.7 -0.8 2.4 12.6 1.9 3.9 0.1 15.4 -0.7 0
You obtain the data shown below for 30 girls with anorexia who were treated with psychodynamic therapy.
A). Using the data below and the data above compare the outcomes for CBT and psychodynamic therapy.
B). Report the appropriate null and research hypotheses and the critical value (alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic,
0.3 1.7 -1.2 2.2 -1.8 0.9 2.6 -3.2 0 -0.5
-4.2 -8.6 0.1 0.6 8.2 0 -2.8 -5.0 0.8 5.0
5.8 0.3 0.6 -5.9 1.2 -7.8 -9.2 1.3 1.9 0.4
Regression model results can be erroneous if multicollinearity is an issue. What causes multicollinearity? If the intercept is statistically significant, what does this tell you?
A researcher wished to estimate the number of households with two cars. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4%.
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
Describe the meaning of alternatives, criteria and states of nature. How are they utilized in decision analysis?
At.01 significance level, is there relationship between job pressure and age?
An annexation suit is being considered against a county subdivision of 600 residencies by a neighboring city. If 40% of the residents favor being annexed and if a random sample of 15 will be collected,
Mutual funds are classified as large-cap funds, medium cap funds, or small-cap funds, depending ont eh capitalizaiton of the companies in the fund.
Set up hypothesis and two-tailed decision rule for right mean using 5% level of significance. Hypothesis for a two-tailed decision is?
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
Construct a 99% confidence interval on the difference of the average ages for the viewers of the two TV programs. How can you interpret this interval?
A person asks, "what do you think is the ideal number of children for a family to have?" The 497 females who responded had a median of 2, mean of 3.02, and a standard deviation of 1.81.
The probability of Toyota building a new production plant is 70% and the probability of GM building a new one is 50%. The following are the probabilities associated with the countries Toyota would build a new plant:
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