Extra Practice (Ch.8 &amp; Ch.9)

# Extra Practice (Ch.8 &amp;amp; Ch.9) - Exam

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Unformatted text preview: Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Solve the problem. Round your answer to two decimal places, if necessary. 1) There are 329 teachers at a college. In a sample of 110 teachers from this college,the proportion who had doctorates was 0.62. Based on that sample statistic, what is the best estimate of the proportion for all teachers at this college? 1) A) 0.38 B) 0.62 C) 0.65 D) 203 SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Solve the problem. Round your answer to one decimal place, if necessary. 2) The distribution of sample means for a group of test scores for samples of 100 scores is normal with a mean of 60.9 and a standard deviation of 2. Suppose you take a sample of 100 test scores and find that the mean is 59.9. How many standard deviations is the sample mean from the mean of the distribution of sample means?...
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## This note was uploaded on 03/18/2012 for the course STA 1013 taught by Professor Moody during the Spring '08 term at FSU.

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Extra Practice (Ch.8 &amp;amp; Ch.9) - Exam

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