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1. A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager.
A logistic equation was fit to the data with SPSS, and the following output obtained.
A 95% confidence interval for the slope isA. -0.532 ± 0.498.B. 0.559 ± 0.477.C. -0.559 ± 0.477.
2. Who is more likely to smoke - males or females? Data from 92 subjects were obtained. Females were coded as 0 and males as 1. Minitab output is below.
Based on this information, who is more likely to smoke?A. MalesB. FemalesC. They're equally likely.
3. Who is more likely to smoke - males or females? Data from 92 subjects were obtained. Females were coded as 0 and males as 1. Minitab output is below.
What does the odds ratio mean here?A. Females are 82% more likely to smoke than males.B. Males are 82% more likely to smoke than females.C. Males are 6.17 times more likely to smoke than females.
Questions based on binomial distribution, variance of the binomial distribution, discrete random variable and continuous random variables.
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
We want to know if his support has decreased. In computing a test of hypothesis with , what is the estimate of the overall proportion?
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
A sample of 50 male and 50 female infants were put on an experimental infant formula. After two weeks the parents of each infant were asked to fill out a questionnaire concerning infant satisfaction on the formula. One of the questions was "Did Ba..
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
Researchers are studying the absorption of two drugs into the bloodstream. Each drug is to be injected at three dosages. There are 24 people in the study, and they are randomly divided into six groups.
Distinct random variable
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