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John Carpenter is considering investing some money he won at a game show. The following payoff table gives the profits that would be realized during the next year for each of three investment alternatives John is considering:State of NatureDecision Alternative Good Economy Poor EconomyStock market 80,000 -20,000Bonds 30,000 20,000CDs 23,000 23,000Probability 0.5 0.5a. What decision would maximize expected profits?b. What is the maximum amount that should be paid for a perfect forecast of the economy?
Discuss how the statistical application of Pearson r is used for hypothesis testing. Through application of the Spearman Correlation discuss what type of data the Pearson formula can be used for.
A sample of 16 consumers is taken. The average age in the sample was 22.5 years with a standard deviation of 5 years. Construct a 95% confidence level.
Two semiconductor factories are being compared to see if there is a difference in the average defect rates of the chips they produce. In the first factory, 250 chips are sampled. In the second factory, 350 chips are sampled. The proportions of def..
Plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two?
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
What are post hoc comparisons, and why do researchers make them? Why do researchers not use the Bonferroni procedure of procedures for post hoc comparisons?
Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.
Use this sample information to test whether or not there has been a change in the average duration of long distance phone calls. Use a .05 level of significance. What is the p value?
What is the probability that the income is between $1,000 and $1,800? (Be able to draw a graph to illustrate your results)
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
Why does the sample size play such an important role in reducing the standard error of the mean? What are the implications of increasing the sample size?
Find the best point estimate of the mean salary of all NCAA football coaches.
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