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What is the probability of an event? What are mutually exclusive events? What does collectively exhaustive mean? How can we use contingency tables to solve for the probability of two events occurring at the same time? What is a conditional probability? Finally, explain the difference between the addition rule and the multiplication rule.Use the following data to support answers to the questions above:Out of 1000 respondents to a survey, 250 people planned to purchase a TV of which 200 actually purchased and 50 did not actually purchase. 750 people did not plan to purchase at TV, of which 100 actually purchased and 650 did not actually purchase. Put this data in the form of a contingency table and apply to some of the concepts above. For example, what is the probability that a person planned to purchase a TV? What is the probability that a person planned to purchase and actually purchased a TV? What is the probability that a person purchased a TV conditional on the fact that they planned to purchase a TV? Feel free to slice it and dice it as many ways you like to review for the exam.
Use each decision criterion (maximin, maximax, minimax regret, expected value) to determine the price that Pizza King should charge.
Linear programming problems. Computethe following linear programming problem. Among which of the following points (X,Y) is feasible.
On average, how long does patient stay in ER? On average, how long does Potential Admit stay in ER? On average, how many patients are in the ER?
Create a scatterlpot of P_RFM and P_HELM. If drawing plot by hand, use graph paper to make sure accuracy. Be sure you label axes. After you have created the scatterplot, consider its form and direction. Recognize outliers, if any.
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
Customers who enter the store, and ask them if they have a Ralph's card. Suppose they solicit 400 customers one day, and find that 160 of them have a Ralph's card.
Compute a 95% confidence interval for the mean using the formula and where is the mean of the ten random numbers.
Select three situations in psychology where you, the research psychologist, would be concerned about effect size in your research endeavor.
Assume the cholesterol levels of adult American women are normally distributed with a mean of 190 mg/dL and a standard deviation of 26 mg/dL. What level would represent the 10th percentile?
Can you please explain a general strategy for factoring in a very organized way. Give an example if possible.
Pretests, posttests and threats to internal validity and please discuss all threats to internal validity.
Research question : At α = . 01, is degree of certainty independent of credits earned?
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