1) Scores for a common standardized college aptitude test are normally distributed with a mean of 489 and a standard deviation of 113. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 534.3. P(X > 534.3) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If 18 of the men are randomly selected, find the probability that their mean score is at least 534.3. P(M > 534.3) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
1) Scores for a common standardized college aptitude test are
If 1 of the men is randomly selected, find the
P(X > 534.3) =
Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
If 18 of the men are randomly selected, find the probability that their mean score is at least 534.3.
P(M > 534.3) =
Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
2)The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if its 4730 households discard waste with weights having a mean that exceeds 26.98 lb/wk. For many different weeks, it is found that the samples of 4730 households have weights that are normally distributed with a mean of 26.74 lb and a standard deviation of 12.54 lb.
What is the proportion of weeks in which the waste disposal facility is overloaded?
P(M > 26.98) =
Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
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