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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 survey. Ten were promised a check for $1.00, 10 were promised a check for $5.00, 10 were promised a check for $10.00, 10 were promised a check for $25.00, and 10 were promised a check for $50.00. The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, the researcher recorded whether or not a completed survey was returned.We wish to fit a logistic regression model
where p is the binomial probability of returning a completed survey, and log is the natural logarithm. The model was fit using statistical software and the results are given below.
The value of the X2 test statistic for testing the hypothesis H0: β1 = 0 is
A. 0.0516.B. 2.6061.C. 6.7916.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots.
The ANOVA table is given below,as well as a table of means and standard deviations for the three groups. Evaluate the t statistic for testing contrast
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
What is the city mileage standard deviation for this SUV model?
Evaluate the mean wait time and throughput rate
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
The standard deviation of the time to complete the entire homework assignment
Find the probability of getting a head and rolling a six
Which of the following is the appropriate conclusion from carrying out these multiple comparisons
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