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For the following situations, would you be most interested in knowing the average value, the spread, or the maximum value for each dataset? Explain.
If you think it would be equally useful to know more than one of these summaries, explain that as well. (Answers may differ for different individuals. It is your reasoning that is important.)
a. A dataset with the annual salaries for all employees in a large company that has offered you a job.
b. You need to decide from which of two statistics instructors you will take a class. You have two datasets, with previous final exam scores given by each of the two instructors.
c. A dataset with ages at death for 20 of your relatives who died of natural causes.
A food inspector, examining 12 jars of a certain brand of peanut butter, obtained from the fofollowing percentages of impurities: 2.3, 1.9, 2.1, 2.8, 2.3, 3.6, 1.4, 1.8, 2.1, 3.2, 2.0 and 1.9.
1. A company is evaluating the impact of a wellness program offered on-site as a means of reducing employee sick days. A total of 8 employees agree to participate in the evaluation which lasts 12 weeks.
What is the probability that none of the people are Independent? What is the probability that fewer than five people are Independent? What is the probability that more than two people are Independent?
In its third year, a football team averaged 16,050 fans per game, with a standard deviation of 2,500 fans. What is the probability that the number of fans at any given game was greater than 20,000?
Analyze and support whether you believe that the changes recommended are statistically valid and sound enough to make practice changes in a hospital for the two papers listed below. Also in your answer please touch on the following items
assume that matched pairs of data result in the given number of signs when the value of the second variable is
Construct a frequency distribution of the scores.- Construct a histogram of the frequency distribution constructed in part a.
What proportion of the variation in listing price is determined by variation in the square footage? What proportion of the variation in listing price is due to other factors?
Chosen field within a year after graduation. Find the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating.
At the end of class, our teacher said "If you're perceptive, you may have noticed that a regression analysis produced by the Excel Data Analysis ToolPak contains an ANOVA table.
Calculate the least-squares regression line for these data and discuss its usefulness.
Find the parameters of a variable sampling plan, assuming the first of the two conditions is to be satisfied exactly. A random sample of 17 wafers yielded an average of 0.013 mm. Describe the decision regarding the lot based on Forms 1 and 2.
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