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The average grade point average (GPA) of undergraduate students in New York is normally distributed with a population mean of 2.5 and a population standard deviation of .5. Compute the following, showing all work:
(II) The percentage of students with GPA's above 3.0 is:
(III) Above what GPA will the top 5% of the students be (i.e., compute the 95th percentile):
(IV) If a sample of 25 students is taken, what is the probability that the sample mean GPA will be between 2.50 and 2.75?
(a) less than .10(b) .122(c) .243(d) .307(e) .346(f) .38(g) .42(h) .44(i) .494(j) more than .494.
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Create the indicated confidence interval for population mean using (a) t-distribution. (b) If you had incorrectly used normal distribution, which interval would be wider?
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A random sample of 400 college students was selected and 120 of them had at least one motor vehicle accident in the previous two years. A random sample of 600 young adults not enrolled in college was selected and 150 of them had at least one motor..
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The kinds of statistical methods that were used to formulate the author's argument.
How do we go about interpreting the results of various types of statistical tests in health care research?
An experiment ws designed to estimate the mean difference in weight gain for pigs fed ration A as compared with those fed ration B. Eight pairs of pigs were used. The pigs within each pair were littermates.
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