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Question: A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:
690 686 714 738 682 751 724 713 763 703 703 711 771719 691 715 752 717 750 703 720 772 743 739 744
a. Find the mean, median and mode of this information. (Round your answers to 2 decimal places.)
Mean Median Mode
b. What are the range and standard deviation? (Round your answers to 2 decimal places.)
Range Standard deviation
c. Use the Empirical Rule to establish an interval which includes about 95 percent of the observations. (Round your answers to 2 decimal places.)
The interval is from $ up to $.
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Consider the sample data given below to be two independent samples. Use a 0.05 significance level to test the claim that m1 . m2. Compare the results from parts (a) and (b). Is it critical that the correct method be used? Why or why not?
The probability that I go to the gym on any given day of the week is 30%. Find the probability distribution of the number of times that I go to the gym over the course of one week (7 days).
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