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The mean score on the math section of the SAT test is 508 and the standard deviation is 111. If a student has a z-score of 1.19, what was her score on the test?
Cough-a-Lot children's cough syrup is supposed to contain 6 ounces of medicine per bottle. However since the filling machine is not always precise, there can be variation from bottle to bottle. The amounts in the bottles are normally distribut..
Bi-lo Appliance Stores has outlets in several large metropolitan areas. The general sales manager plans to air a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday.
you learn the average gre score of private college graduates pursuing their mph is 1500 with a standard deviation of
a simple random sample of 29 students enrolled in graduate programs was selected and the age of each student when they
Refer to the Journal of the European Academy of Dermatology and Venereology study of the link between nickel allergies and use of mascara or eye shadow
Standard deviation of 5 hours. What percentage of the bulbs have lifetimes that lie within one standard deviation of the mean on either side?
Find out the probability that the return for common stocks will be more than 0%.
an elevator in a building starts with 6 people and stops at 8 floors. assuming that all permutations of the passengers
You are given the sample mean and the sample standard deviation. use this information to construct the 90% and 95% confidence intervals for the population mean.
several psychology students are unprepared for a surprise truefalse test with 12 questions and all of their answers are
Convert each of the following z intervals to raw score x intervals:
Discuss the properties of a normal distribution. Why are there infinite possible normal distributions? Why should one assume that sample data represents a population distribution?
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