State Police Academy graduates from a large graduating class have scored an average of 81.0 on a proficiency test, and the scores are normally distributed with σ = 8.5. Graduates are randomly paired and assigned to barracks throughout the state. Madeleine has scored 83.0 on the test. What is the probability that she will be paired with someone whose score was within 5.0 points of her own?
Answer to relevant QuestionsIf x is normally distributed with μ = 20.0 and σ = 4.0, determine the following: a. P(x ≥ 20.0) b. P(16.0 ≤ x ≤ 24.0) c. P(x ≤ 12) d. P(x = 22.0) e. P(12.0 ≤ x ≤ 28.0) f. P(x ≥ 16) Discount Micros, a computer mail-order company, has received 2000 desktop computers from a major manufacturer. Unknown to the mail-order company, 250 of the computers have a hard disk that was improperly installed at the ...What is the difference between a probability distribution and a sampling distribution? At a department store catalog orders counter, the average time that a customer has to wait before being served has been found to be approximately exponentially distributed, with a mean (and standard deviation) of 3.5 ...According to the Investment Company Institute, 40% of U.S. households have an Individual Retirement Account (IRA). Assuming the population proportion to be π = 0.40 and that a simple random sample of 400 households has been ...
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