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What is correlation? Does correlation directly support causation, what are both sides of the argument? Explain and provide examples to support your explanation.
Test this conjecture with formal hypothesis test, by using a 5% significance level. Find out the p-value for hypothesis test.
Which of the following is NOT true regarding the normal probability distribution.
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
Assume that 60 percent of the voters in a particular region support a candidate. Find the probability that a sample of 1,000 voters will yield a sample proportion in favor of the candidate within 4 percentage points of the actual proportion.
A building contractor pays $500 to bid on a contract. If he gets the contract, the probability of which he estimates to be 0.70, he will make a profit of $50,000.
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
Assume a factory manager wishes to buy machines to perform a certain task in a production process. Certain key parts are produced by these machines.
Based on the empirical data determine the following probabilities:
Calculate p value? What is the critical value?
Suppose that past data are not available for developing a planning value for p; therefore, you will use p = 0.050 for the planning average.
A project manager at COMSOFT corporation has collected statistics on the organization's software development process. He has the size of each project in number of lines of code for the past 20 projects and the number of lines of code in error disc..
Explain why a confidence interval for a predictor coefficient is equivalent to a 2-tailed test of significance?
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