[Solved] Suppose we know that a certain exam has test scares that follow a normal distribution with standard deviation a = 13 and mean ,u r 71. What is
Question: Suppose we know that a certain exam has test scares that follow a normal distribution with standard deviation a = 13 and mean ,u r 71.
- What is the probability that a randomly selected score is greater than 72 ?
It Suppose that four students' scores are selected randomly from the same exam. What is the
probability that the average score for that sample of four exams is greater than 72 ?
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(Steps Shown) Assume a significance level of a = 0.05 and use
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