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It is estimated that 3% of the athletes competing in a large tournament are users of an illegal drug to enhance performance. Athletes are tested to see if they are using illegal drugs or not using illegal drugs and the test can come back positive or negative. The test for this drug is 90% accurate for users of the drug. (This means 90% of the tests come back positive if the person uses the drug). What is the probability that an athlete tests positive and is a user of an illegal drug?
0.027
0.1024
0.2177
0.873
what critical value t should be used to calculate the margin of error for a confidence intervalfor the mean of the
Compute the probability for the given frequency distribution.
Using a significance level of 0.03, carry out a hypothesis test to determine if there is convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court.
1. in a taste test between coke c and pepsi p a random sample of 15 students gave the following preferences c c p
a basketball coach wants to know how many free throws an nba player shoots during the course of an average practice.
the united nations released the following annual birth rates and suicide ratesfor selected countriescountrybirth rate
You want to determine whether or not an observational coding system you've created for ADHD is better as a system with 5 behavioral scales or 3 behavioral scales. What test should be run?
Is there a difference in the number of points students earned on their educational statistics pretests and posttests?
a precision drill positioned over a target point will make an acceptable hole if it is within 5 microns of the target.
I am conducting research on microscopic toolmark analysis. If I have a toolmark with 27 striations (lines) of varying spatial relationships (orientations),
your organization has a goal of 14 days for the average processing of a purchase request pr from notification to final
Known that 15% of walls painted with this paint need more than 55 minutes to dry completely. Find the standard deviation of this distribution.
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