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a. What information is obtained from measurements on an ordinal scale compared to measurements on an nominal scale?b. what information is obtained from measurements on an interval scale compared to measurements on an ordinal scale.c. what information is obtained from measurements on a ratio scale compared to measurements on an interval scale?
Calculate the probability that a hand of 13 cards dealt from a normal pack of 52 contains exactly two kings and one ace. what is the probability that it contains exactly one ace given that it contains exactly two kings.
A clinical study was performed to determine if a product was effective in alleviating side effects caused by a mode of treatment. In the treated group (100 subjects) it was found that 10% had side effect A, 15% had side effect B and 65% had side eff..
What is the probability that a randomly selected group of 50 shoppers will spend a total of more than $5700? The total will be more than $5700 when the sample average exceeds what value?
43 students, 22are sophomores, 28are chemistry majors, and 11are neither. What are the probability that the student is both a sophomore and a chemistry major?
How many students should be surveyed to estimate the mean score within 25 points with 90% confidence?
What is the probability that the second one selected is defective given that the first one was defective? (c) What is the probability that both are defective?
If X and Y are infinite sets with the same number of elements, show that the following conditions are equivelent for a function f: X-->Y:
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..
The heights in centimeters of 5 students are: 165, 175, 176, 159, 170. The sample median and sample mean are respectively:
Calculate the standard deviation for this data = since it is a case of grouped data with classes. use group or class midpoints in the formula in place of x values.
A statistical study reported that a drug was effective with a p-value of .042. (a) Is this true? An effective sample may be found about 42 times in 1000 samples.
A sample of 30 students are tested (sample mean=58, standard error=3.2). Compute a 99 percent confidence interval based on this sample's data. How do these students compare to the national sample?
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