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Employers often use standardized measures to gauge how likely it is that a new employee with little to no experience will succeed in their company. One such factor is intelligence, measured using the Intelligence Quotient (IQ). To show that this factor is related to job success, an organizational psychologist measures the IQ score and job performance (in units sold per day) in a sample of 10 new employees.
IQ JobPerformance
100 19115 36108 2998 18120 41147 57132 4785 59105 33110 35
(a) Convert the following data to ranks and then compute a Spearman correlation coefficient. (Round your answer to three decimal places.)
(b) Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis.
Retain the null hypothesis.
Reject the null hypothesis.
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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