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SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Solve the problem.
1) A random sample of 700 high school seniors is given the SAT-V test. The mean score for this sample is overbar(x) = 487. What can you say about the mean score m of all high school seniors? 1) ______________
2) The grade point averages for 10 randomly selected students in a statistics class with 125 students are listed below. What can you say about the mean score m of all 125 students?
3.7 2.5 2.3 2.0 2.6 3.5 2.1 2.8 2.4 3.6 2) ______________
3) A certain confidence in interval is 8.35 < m < 9.85. Find the sample mean overbar(x) and the error of estimate E. 3) ______________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
4) Given the same sample statistics, which level of confidence will produce the narrowest confidence interval? 4) ________
A) 75% B) 85% C) 90% D) 95%
5) The grade point averages for 10 randomly selected students in a statistics class with 125 students are listed below.
2.0 3.2 1.8 2.9 0.9 4.0 3.3 2.9 3.6 0.8
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