Elementary Statistics Using The TI-83/84 Plus Calculator, 4th Edition Test Bank

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Chapter 1 Exam AName___________________________________SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.Form a conclusion about statistical significance. Do not make any formal calculations. Either use the results provided ormake subjective judgments about the results.1) Last year, the average math SAT score for students at one school was 475. The headmasterintroduced new teaching methods hoping to improve scores. This year, the mean mathSAT score for a sample of students was 481. Is there statistically significant evidence thatthe new teaching method is effective? If the teaching method had no effect, there wouldbe roughly a 3 in 10 chance of seeing such an increase.Does the result have statisticalsignificance? Why or why not? Does the result have practical significance?1)Provide an appropriate response.2) Why do you think that cluster sampling is frequently used in practice.2)Use critical thinking to determine whether the sampling method appears to be sound or is flawed.3) "38% of adults in the United States regularly visit a doctor". This conclusion was reachedby a college student after she had questioned 520 randomly selected members of hercollege. What is wrong with her survey?3)MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.Determine whether the given description corresponds to an observational study or an experiment.4) A stock analyst selects a stock from a group of twenty for investment by choosing the stock withthe greatest earnings per share reported for the last quarter.A) ExperimentB) Observational study4)Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience.5) The name of each contestant is written on a separate card, the cards are placed in a bag, and threenames are picked from the bag.A) RandomB) ClusterC) ConvenienceD) StratifiedE) Systematic5)6) To avoid working late, a quality control analyst simply inspects the first 100 items produced in aday.A) SystematicB) StratifiedC) ConvenienceD) ClusterE) Random6)1

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Elementary Statistics by Mario F. T...

Elementary Statistics Using The TI-83/84 Plus Calculator, 4th Edition Test Bank

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