Question
The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean and standard deviation .
The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean and standard deviation .
(a) What is the probability that a single student randomly chosen from all those taking the test scores 556 or higher? ANSWER: ? For parts (b) through (d), consider a simple random sample (SRS) of 35 students who took the test.
(b) What are the mean and standard deviation of the sample mean score , of 35 students? The standard deviation of the sampling distribution for is: ?
(d) What is the probability that the mean score of these students is 556 or higher? ANSWER: ?
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Numerical Analysis
Authors: Richard L. Burden, J. Douglas Faires
9th edition
538733519, 978-1133169338, 1133169333, 978-0538733519
