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Chi-square test for independent attributes.
On the most recent tax cut proposal, a random sample of democrats and republicans in the Congress cast their votes as follows:
Democrats: Favor = 85 Oppose = 78 Abstain = 37
Republicans: Favor = 118 Oppose = 61 Abstain = 25
Are the opinions on the tax cut proposal independent of party affiliation? Use a = 0.01
Categorize the events as dependent or independent. Events A and B where P (A) = 0.7, P (B) = 0.8, and P (A and B) = 0.56.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Create a scatter plot for the data. Determine the correlation coefficient for the data.
Does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket?
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
The scores of college-bound senior men on the math part of the SAT followed a normal distribution with mean 527 and standard deviation 116.
Data is given in the table below. Process data as illustrate in the paper on the Mann-Whitney U test. Critical Value:Test Statistic (Show procedure.)Z .
Statistical Hypothesis testing - Frequency distribution
Here are fifty observations on the weight of tea bags. Create mean, mode and median.
Explain your answer to someone who is familiar with the t test for a single sample, but not with the t test for independent means.
Set up probability distribution by illustrating all x values and their associated probabilities. List sample space of tossing a fair coin.
Find out optimal assignment and calculate total minimum cost.
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