Stat Final Practice Exam Form C Fall 2008

# Stat Final Practice Exam Form C Fall 2008 - Introductory...

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Introductory Statistics Practice Final Exam Form C NAME_________________________ 1 Part I. Short Answer (6 Points Each) _____ 1. What is the critical value of t for a two-tailed test with a null hypothesis μ = 25, σ = .05 and n = 17? ____________________ 2. What is the critical value of t for an alternative hypothesis of μ > 30, a 1% level of significance and a sample size of 8? ____________________ 3. What is the critical value of t for an alternative hypothesis of μ = 50, σ = .20 and a sample size of 5? _______________________ 4. If the critical value is 1.96 and the computer value of the test statistic is 2.64, what is the decision? __________________________ 5. A Parks and Recreation official surveyed 200 people at random who have used one of the city’s parks. The survey revealed that 26 resided outside the city limits. If she had to arrive at one single value to estimate the true proportion of park users who are residents of the city what would it be? __________________________

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Part II. Matching (4 Points Each) _______ ___ Reject Ho ___ T-Distribution ___ Wider ___ Alternate Hypothesis ___ Decision Rule ___ Test Statistic ___ Opposites ___ Equality Sign ___ Null Hypothesis ___ Sampling Error A. Generally speaking, the _____ _____ is set up for the purpose of either accepting or rejecting it. B. An _____ _____ is a statement about a population parameter that is accepted when the null hypothesis is rejected. C. A _______ _______ is a calculated value from sample information used to reject or not reject the null hypothesis. D. The final step in testing a hypothesis is taking a sample and, based on the _____ _____, arriving at a decision. E. The _______________________is used to obtain the critical value in developing a confidence interval when the population distribution is not known and the sample size is small. F. The higher the level of confidence, the ____________________the confidence interval must be. G. In hypothesis testing, the null hypothesis should contain the________________________. H.
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## This note was uploaded on 08/09/2011 for the course STAT 302 taught by Professor Kristopher during the Spring '11 term at Delaware State.

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Stat Final Practice Exam Form C Fall 2008 - Introductory...

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