Mathematics, 04.11.2019 22:31, 182075
Almost all medical schools in the united states require students to take the medical college admission test (mcat). to estimate the mean score of those who took the mcat on your campus, you will obtain the scores of an srs of students. the scores follow a normal distribution, and from published information you know that the standard deviation is 10.8 . suppose that, unknown to you, the mean score of those taking the mcat on your campus is 510 .in answering the questions, use z ‑scores rounded to two decimal places. (a) if you choose one student at random, what is the probability that the student's score is between 505 and 515. (b) you sample 22 students. what is the standard deviation (±±0.01) of sampling distribution of their average score x¯¯¯x¯? (c) what is the probability (±±0.0001) that the mean score of your sample is between 20 and 30?
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