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You are considering investing in a company. The company claims for the past few years the average monthly return on such an investment has been $870 with a standard deviation of $50. You sample 30 investors and determine the sample average return to be $855. Using a .05 level of significance would you conclude that the true average return is different from $870? Explain your conclusion
problem 1a researcher is interested in evaluating whether there is a relationship between number of packs of cigarettes
Age Category Insurance Health Insurance
Calculate the mean and standard deviation and Based on these statistics, describe how these anthropometric data compare to the US male and Chinese female populations.
Statistics from Cornell's Northeast Regional Climate Center indicate that Ithaca, NY, gets an average of 35.4" of rain each year with a standard deviation of 4.2". Assume the data is normally distributed.
Know the proper format for a Null Hypothesis. Know the proper format for an Alternative Hypothesis. Know how to state a Null and Alternative Hypothesis for business situations. Know the definition of a Type I error. Know the definition of a Typ..
Work up a simulation model to examine the uncertainty for five different investment projects. p1 = 0.5, p2 = 0.35, p3 = 0.65, p4 = 0.58, p5 = 0.45. The outcomes of the projects should be viewed as independent since the projects are run by di..
Perform a factor analysis on the three variables shown in question 2 above. What do conclude about the factors? Perform another factor analysis that includes the new variable, change in external events. What do you conclude?
Festival Histogram: Beginning with in the text on spotting outliers, correct the type in the data as directed - create a separate histogram for each day, Day1, Day2, and Day3, using the hygiene variable for all three days. Include the normal curve
Mickey Lawson is considering investing some money that he inherited. The following payoff table gives the profits that would be realized during the next year for each of three investment alternatives Mickey is considering:
Format your data in a Microsoft® Excel® spreadsheet. Need some advice and guidance on setting this up in excel. Currently working on trying to figure out the formulas and how to arrange the data. Also looking at how to set up excel to calculate the i..
1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders
How many free premium channels should the research director recommend for inclusion in the 3-For-All service ?
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