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Why is it acceptable to use a dichotomous predictor variable in a regression when it is not usually acceptable to use a categorical variable that has more than two values as a predictor in regression? Identify a research question from your professional life, research interests, or everyday experience that could be addressed by this analysis.
At the 0.05 level of significance, can we conclude Middletown students remained in their districts less time than Brockton students? Make use of 5-step hypothesis testing procedure.
Use the t test to determine whether the slope of the regression model is significant at α = 0.05.
What conclusions can you draw about the nature of the relationship between anxiety and exam performance?
Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.
The probabilities of low, medium and high compliance are 0.3, 0.4, and 0.3, respectively
A savings account was opened for a baby on 1985 with a $100 deposit. No withdrawals or deposits occurred since the account was opened. The current balance of the account is $246.47. Measured in dollars of the year in which the account was opened, how..
Calculate expected number of interruptions per day. Calculate standard deviation.
What was the highest score earned on the exam? According to Chebyshev's Theorem, how many students scored between 42 and 74?
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
Here are fifty observations on the weight of tea bags. Create mean, mode and median.
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
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