Reference no: EM138117
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.
A 95% confidence interval for the odds ratio is
A. (0.0128, 0.0904).
B. (1.0323, 1.0740).
C. (1.0129, 1.0946).
|
Compare with single versus multiple bidders
: How do the buyer's returns compare with the method of payment, and how do they compare with single versus multiple bidders.
|
|
Net present value index
: Calculate the following: Rate of Return and Calculate the following: Net Present Value Index
|
|
Evaluate the results of the regression equation
: Evaluate the results of the regression equation tells managers and how it is likely to impact decisions made related to maximizing profitability.
|
|
Example on natural logarithm
: where p is the binomial probability of returning a completed survey, and log is the natural logarithm. The multiple logistic regression output from fitting this model is given below.
|
|
Logistic regression model
: 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 ..
|
|
Developing a rash and log is the natural logarithm
: Could mud-wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington health center wondered this when one male and six female students complained of rashes..
|
|
X2 test statistic for testing the hypothesis
: 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 value of the X2 test statistic for testing the hypothesis
|
|
Example on logistic regression model
: Could mud-wrestling be the cause of a rash contracted by University of Washington students in the spring of 1992? Two physicians at the University of Washington health center wondered this when one male and six female students complained of rashes..
|
|
What is a 95% confidence interval for the odds ratio
: What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
|