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Question: Suppose you believe that the price of a particular stock goes up each day with probability p and goes down with probability 1-p. You also believe the daily price changes are independent of one another. However, you are not sure of the value of p. Based on your current information, you believe p could be 0.40, 0.45, 0.50, or 0.55, with probabilities 0.15, 0.25, 0.35, and 0.25, respectively. Then you watch the stock price changes for 25 days and observe 12 ups and 13 downs. Use Bayes' rule to find the posterior distribution of p. Based on this posterior distribution, calculate the probability that there will be at least 15 ups in the next 30 price changes.
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
Let the random variable Y be the number of pounds sold to a randomly selected customer buying winter fertilizer. Find the probability distribution for Y.
Determine whether the following definitions are stipulative, lexical, precising, theoretical, or persuasive.- "Intoxicated," for purposes of driving a car in many states, means having a blood-alcohol content of 0.08 percent (.0008) or greater.
Deductible amount and limits of liability, are standardized. The sample information is reported below. At the .10 significance level, can we conclude that there is a difference in the amounts quoted?
Interpret the y-intercept of the line.
Develop a 98 percent confidence interval for the population mean. Would it be reasonable to conclude that the population mean is $350 per month?
Given a standard normal distribution, determine the following. Show Table Values used in each part.
Give the null and alternative hypotheses for testing whether there exists a positive linear relationship between y and x - What is the difference between what σx and σ-x measure?
a consumer group rated 12 manufactured products imported from a single source on a scale of 1 to 10. the data are shown
Prove that Kendall's coefficient of concondance (Eq. 8.6) is given by
Scenario: Dr. Olson is interested in the effects of three different methods for losing weight in long-distance truck-drivers. He tested a sample of 60 truck drivers. Participants were randomly assigned to one of three groups of 20 people each.
Let X be the number of gallons of ice cream that is requested at a certain store on a hot summer day. Assume that f(x)= 12x(1000-x)^2/10^12, 0
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