Statistical Methods and Hypothesis Testing: Practice Questions and Solutions

Practice exercises on hypothesis testing, probability, and data interpretation.

Alexander Wilson

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Statistical Methods and Hypothesis Testing: Practice Questions andSolutions1.In a statistical study thepopulationisA)the group of people from which the sample is takenB)all of the people in the United StatesC)all of the people inthe worldD)the people who comprise the sampleFeedback:The population is the larger group of people from which the sample was takenPoints Earned:0.0/1.0Correct Answer(s):A2.The sample mean is an estimate of:A)The average value forpeople NOT in the populationB)The average value in the sampleC)The true population meanFeedback:The sample mean is anestimateof the true population mean. It is, however,anexactmeasurement of the average value in the sample since thesample data is what is used tocalculate the sample mean.Points Earned:0.0/1.0Correct Answer(s):C3.A summary measure calculated from the sample is called a(n):A)parameterB)statisticC)outlierFeedback:Sample measures arestatistics; population measures are parametersPoints Earned:1.0/1.0Correct Answer(s):B

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