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Which of the following best expresses the value of using percentages in data presentation?
A. Provides for the calculation of marginals.
B. Allows for relative comparisons.
C. Focuses on the count of cases.
D. Allows for mathematical manipulation of the values.
I chose "B. Allows for relative comparisons." and it was wrong. What would be the second option?
How close is the calculated value to your experimental value?
Find out the least-squares regression line and interpret its slope.
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
Bicycle helmet use. Table lists data from a cross-sectional survey of bicycle safety. The explanatory variable is a measure of neighbourhood socioeconomic status (variable_RFM). The response variable is "percent of bicycle riders wearing a helmet"..
Graph the least-squares line on your scatter diagram. Be sure to use the point (x, y) as one of the points on the line.
Find out sample correlation coefficients of (I) age with dry weight, and (2) age with log 10 dry weight. Interpret your results.
The shell thicknesses of the eggs produced by a large flock of hens follow approximately a normal distribution with mean equal to 0.38 mm and standard deviation equal to 0.03 mm. Find the 95th percentile of the thickness distribution.
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
To give 98% confidence interval for population mean μ, you would use critical value.
Determine the probability that the project will be completed in 90 days or less.
Is there a significant difference the four testing conditions?
Is global F ratio significant? Identify this F ratio, and describe whether it is important.Is coefficient for X1 (productivity) significant? How do you know? Mention its t value and accompanying P-value.
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