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Test the significant difference between chi-square for attributes.
Are teens' attitudes toward trying cocaine dependent on their GPA? Using data from the MTF 2006, test whether attitude toward trying cocaine is independent of high school GPA (∝ = 0.01). How is this relationship different from the bi-variate relationships?
Attitude Toward
GPA
Trying Cocaine
2.0 or less
3.0
4.0
Total
Don't disapprove
24
30
15
69
Disapprove
28
31
27
86
Strongly disapprove
82
187
182
451
134
248
224
606
What is the probability that none can transact business in a foreign language?
Compute b1, slope of an OLS regression line using dollars spent as dependent variable (Y) and age as independent variable (X).
What happens to the boundaries for the critical regions?
write down the hypothesis the test used the p-value and the interpretation then hand calculates a 95% CL for the odds ratio estimate on this last test.
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
Explain the relationship between total gross and opening gross total gross and number of theatres total gross and week in top 60.
what is the probability that at least 8 of the words on the test are words that the student knows?
The value of R-square indicates the amounts of variation in the dependent variable that is explained by the independent variable.
If you did not know anything about standard deviation of population from which sample was taken, find out the 95% confidence interval for mean test score.
It was reported that 20 readers responded and 87% said "no" while 13% said "yes." Recognize 4 major flaws in this survey.
Two letters are chosen at random without replacement from word statistical. Determine the probability that both letters are s?
Illustrate the regression model and predict it. The following table shows the yearly maintenance costs for several cars, as well as their age.
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