Suppose 50 drug test results are given from people who
use drugs (see table below):
If 2...
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Suppose 50 drug test results are given from people whouse drugs (see table below):
If 2 of the 50 subjects arerandomly selected without replacement, find theprobability that the first person tested positive and the secondperson tested negative.
_______________
Positive Test Results:
44
Negative Test Results:
6
Total Results:
50
A comprehensive final exam in STAT 200 has a mean scoreof 73 with a standard deviation of 7.8. Assume the distribution ofthe exam scores is approximately normal. If 24 students arerandomly selected, find the probability that the mean of their examscores is less than 70.
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