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To qualify for police academy, candidates must score in the top 20% on a general ability test. The test has a mean of 300 and a standard deviation of 50. Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
Interpret the correlation between each set of variables.
Using a 1% level of significance, can the hypothesis that the distributions for the student's scores are identical be accepted?
From Group of 40 People, a jury of 12 people is selected. In how many various ways can a jury of 12 people be selected?
What is the likelihood that none of the selected flights arrived within fifteen minutes of scheduled time?
Determine the calculated value of the test statistic? What distribution does test statistic have when null hypothesis is true?
For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months.
Determine the percent of the days is the price between $38.00 and $40.00?
Suppose you found that in doing the hypothesis test, you were able to reject the null hypothesis. What is the most appropriate conclusion to draw?
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
What is the probability that the drug will be effective for 3 hours or more?
The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.
At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
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