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GPAs
In finding a confidence interval for a random sample of 30 students GPAs, one interval was (2.60, 3.20) and the other was (2.65, 3.15).
a. One of them is a 95% interval and one is a 90% interval. Which is which, and how do you know?
b. If we used a larger sample size (n = 120 instead of n = 30), would the 95% interval be wider or narrower than the one reported here?
The sensitivity of a test is the probability that a person having the disease will test positive (indicating the person has the disease, i.e., it's the probability the test will pick up the fact that a person has the disease).
Earthquake aftershock magnitudes. Seismologists use the term ‘‘aftershock'' to describe the smaller earthquakes that follow a main earthquake.
Draw a tree diagram to illustrate the probabilities in a situation where you first identify the type of institution attended and then identify the gender of the student.
suppose we are testing the null hypothesis ho20 and the alternative ha does not 20 for a normal population with a
She informs you that your z score was 1.10. What was your percentile score on this test? (enter a number only, rounded to the nearest 2 decimal places.
b. Obtain the estimated ridge standardized regression coefficients, variance inflation factors, and R2 for the following biasing constants: c = .000, .002, .004, .006, .008, .02, .04, .06, .08, .10.
Criticize the following definitions in light of the eight rules for lexical definitions:- Animal: a living creature corporeal, distinct, on the one side, from pure spirit, on the other, from pure matter. (Johnson's Dictionary)
Based on this information, what is the upper limit for the 95 percent confidence interval estimate for the proportion of people in Chicago that listen to WJKT-1450?
Annually from tornadoes in the U.S.A. is less than 30. If a sample of 9 randomly selected years had a standard deviation of 29, is the claim believable? Use = .01?
the eagle ridge contractors association claims the average price of a home in thier subdivision is 125150 with a
approximately 30 of obese patients develop diabetes. if a physician sees 10 patients who are obesea what is the
Run simulation using Oracle crystal ball
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