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1. An analyst believes that the price of an IBM stock is a normally distributed random variable with mean $105 and variance 24. The analyst would like to determine a value such that there is a 0.90 probability that the price of the stock will be greater than that value.11 Find the required value.
2. Weekly rates of return (on an annualized basis) for certain securities over a given period are believed to be normally distributed with mean 8.00% and variance 0.25. Give two values x1 and x2 such that you are 95% sure that annualized weekly returns will be between the two values.
Are the events "Republican" and "30-44" independent? Justify your answer. Are the events "Democrat" and "65+" independent? Justify your answer.
On Saturday morning, calls arrive at TicketMaster at a rate of 108 calls per hour. What is the probability of fewer than three calls in a randomly chosen minute?
The Pew Research Center’s Social & Demographic Trends project found that 46% of U.S. adults would rather live in a different type of community than the one where they are living now (Pew Research Center, January 29, 2009). The national survey of 2260..
suppose that x and y have a joint probability density function pdffx y kx 2y for 0 lt x lt 1 and 0 lt y lt 10
if a couple plans to have 10 children what is the probability that there will be a least one girl? if the couple
1.Cranberries can be harvested using either a wet method or a dry method.
transit administration light-rail is one of the safest modes oftravel with an accident rate of .99 accidents per
Determine the probability that a randomly selected exam will have a score of at least 71? What percentage of exams will have scores between 89 and 92?
1. state two ways in which the standard normal distribution and the students t-distribution are alike.2. state two ways
Suppose the time spent by a randomly selected student who uses a terminal connected to a local time-sharing mini-frame computer facility. What are the values of alpha and beta?
You would like to invest if the price is likely to rise in the long run. You have data on the daily average price of this stock over the past 12 months. Your best action is to?
Use these data to obtain a 90% confidence interval estimate for the mean starting monthly salary, µ, of all recent graduates with bachelor's degrees in marketing from this university.
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