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Describe the methods for interpretation of categories (row or column) in CA. Can categories always be directly compared based on proximity in the perceptual map?
Consider a random variable Y, and a constant theta such that (1/theta)Y is distributed exponentially. Derive the lower and upper bounds for a 90% confidence interval for theta (These will be a function of y). Noe that theta=1/lambda where lambda i..
Find a 98% confidence interval for the mean number of days required for successful completion of physical therapy for patients in the average group. Discuss the results.
What is the explained return on an equally weighted portfolio of these three stocks? What is the variance of a portfolio invested 20 percent each in A and B and 40 percent in C?
Someone gives you 10 to 1 odds that you cannot roll a double number with the roll of a pair of dice. You win $10 if you succeed and you lose $1 if you fail. What is the expected value of the game for you? What can be expected if you play 100 times..
Consider the following situation describing layoffs at a manufacturing plant of the Monsanto Company. Does there appear to be a case of age discrimination between those laid off and those non-laid off?
Find the 90% confidence interval for the variance and standard deviation for the time it takes a state police inspector to check a truck for safety if a sample of 27 trucks has a standard deviation of 6.8 minutes.
When we carry out a goodness of fit chi-square test, the expected frequencies are based on the alternative hypothesis
Tree diagram for a probability experiment - Identify the sample space of the probability experiment and determine the number of outcomes in the event. Show a tree diagram if it is appropriate.
In exercise identify (a) sample and (b) population. Also, find whether sample is likely to be representative of population.
Calculate power of test if researcher uses a sample of n = 16 individuals.
Give an example of a hypothesis test. State what the Null and the Alternative hypotheses.
What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)?
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