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1) When the necessary conditions are met, a two-tail test is being conducted to test the difference between two population proportions. the two sample proportions are P1 = 0.25 and P2 = 0.20 and the standard error of the sampling distribution of P1 - P2 is 0.04. the calculated value of the test statistic will be?
2) When the necessary conditions are met a two-tail test is being conducted to test the difference between two populations means but your statistical software prvides only a one-tail area of 0.036 as part of its output. The p-value for this two-tail test will be?
The buyer-believes that the differences are normally distributed and will use this sample to perform an appropriate test at a level of significance of 0.01.
Assume a business researcherwishes to test hypothesis that greater proportion of marketing managers keep track of such obligations.
In testing the equality of the two means below, what is the test statistic? (Use the unequal variances formula)
Describe the 5-Step Hypothesis Test for a particular claim related to your work or life environment. (This should be a test of one-sample mean or one-sample proportion.
Estimated the probability that among 75 randomly selected students, at least 20 of them score greater than 78.
The use of linear regression is a critical tool for a manager's decision-making ability. Please carefully read the example below and try to answer the questions in terms of the problem context.
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
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be:
What is meant by a probability distribution? Discuss how you could use one of the text probability distribution at your workplace to help solve a business problem.
Given CAPM as the benchmark, is either of the two managers over-performing the market? What if you use the Sharpe Ratio as benchmark? Explain the answer carefully.
In a study, 37% of adults questioned reported that their health was excellent. A researcher wishes to study the health of people living close to a nuclear power plant.
What advantage does correlation have over a cross-tab?
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