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What are the similarities and dissimilarities between a chi-square analysis and a correlation analysis? Suppose you conducted a study to see if there was an association between political party affiliation and whether or not someone voted. What type of analysis would you use and why?
Calculate an 85% confidence interval for the population mean number of wolf pups per den at southwestern United States (US).
Using the raw measurement data presented below, calculate the t value for independent groups to determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers.
Using the Census data, the OH Registry of Motor Vehicles reveal the subsequent about the Autos owned by the 10 families residing in Smallville.
Construct a 95% confidence interval estimate for the population proportion of administrative professionals who prefer cash bonuses.
How could your answer to part (A) change if you knew returns followed a skewed distribution instead of a normal distribution? Explain.
Find the percentage of buyers who said their price range is between $150,000 and $153,300.
A process is out of control when:
The mean of a sample is 22.5. The mean of 1000 bootstrapped samples is 22.491. The bias of the bootstrap mean is
What percent of the sales representatives earn more than $42,000 per year? What percent of the sales representatives earn between $32,000 and $42,000?
Use the t-distribution table to find the critical values for the indicated alternative hypothesis, level of significance, a and sample size n1 and n2. Assume that the sample are independent, normal and random. Ha: u1
Write down a paragraph about the normal distribution. In the paragraph give an example of a distribution that you would judge to be nearly normal and explain why you have made that conclusion.
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
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