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Scores on the SAT verbal test are ND with a mean of 505 and std. dev. of 110.
(a) What percent of scores fall between 520 and 600?
(b) What percent of scores fall between 450 and 550?
(c) How high must a student score to be in the top 10 percent?
(d) What score would put a student in the bottom 25 percent?
You are the principal of a large urban high school and wish to do a parent survey to determine how parents feel about same-sex classes.
A cognitive psycholgist believes that a particular drug improves short-term memory. The drug is safe, with no side effects. An experiment is conducted in which 8 ramdomly selected subjects are given the drug and then given a short time to memorize..
a researcher wants to determine if the average performance on a standardized business management test is significantly
parking at a large university has become a very big problem. university administrators are interested in determining
5 of which are built to metric standards and 7 of which are built to english standards. What is the probability that out of 3 taken, at least one is english standard engine?
in order to estimate the average electric usage per month a sample of 196 houses was selected and their electric usage
determine the null and alternative hypotheses. the percentage of viewers tuned to fox news is equal to
The problem relates to Basic Statistics and it is about compute the number of female physicians in a university to be above the average number of 27.9 percent. The computations for this have been given in the solution in detail
a. Assuming that s1 = 1.2 and s2 = 1.1, test the relevant hypotheses using a = .001. b. Compute b for the test conducted in part (a) when m1 - m2 = 6.
What information is obtained from measurements on an interval scale compared to measurements on an ordinal scale. What information is obtained from measurements on a ratio scale compared to measurements on an interval scale?
The question is, is it just sampling error that accounts for the difference, or is the local store different than the national numbers? This is a typical chi-square problem.
The shirt was a mesh polo shirt. Given this information, what is ths probability that the mesh polo shirt came from box 1?
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