The data set represents the scores of 12 randomly selected students on the SAT Physics Subject Test.
Question:
The data set represents the scores of 12 randomly selected students on the SAT Physics Subject Test. Assume the population test scores are normally distributed and the population standard deviation is 104.
590 450 490 680 380 500 570 620 640 530 780 720
(a) Find the point estimate of the population mean.
(b) Construct a 90% confidence interval for the population mean. Interpret the results.
(c) Does it seem possible that the population mean could equal 667? Explain.
(d) Determine the minimum sample size required to be 95% confident that the sample mean test score is within 10 points of the population mean test score.
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a x 5792 b With 90 confidence you can s...View the full answer
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ISBN: 9780134683416
7th Edition
Authors: Ron Larson, Betsy Farber
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