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High temperature in a certain city for the month of august follow a uniform distribution over the interval 61F to 91F. Find the temperature which is exceeded by the high tempature 90% of the days in august.
Suppose a deck of 52 cards is shuffled and the top two cards are dealt. How many ordered pairs of cards could possibly result as outcomes?
What is the probability that at least one of the alternations is discovered? Find the expected value and variance of the number of altered accounts discovered during the audit.
A random sample of gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 44.7 cents?
Owning a business, what do you see as the biggest challenge or challenges in developing a useful forecasting?
Selling price and amount spent on marketing were entered into a multiple regression to determine what affect flat panel TV sales.
a. Specify the competing hypotheses to test whether the median test scores differ by location. b. Calculate the value of the test statistic H.
Develop a probability distribution for the number of students in the sample who watch soap operas.
A sample of seed packets was selected, and their weights in grams were recorded as follows: 15.1, 15.6, 15.8, 15.1, 15.5, 15.9, 15.5, 15.2. Determine a 90% confidence interval for the mean weight of seeds in all packets.
x is a normally distributed random variable with a mean of 5.0. find the standard deviation of the distribution if
Recall the random variables of given Exercise that are uniformly distributed over the region - Find the conditional PDFs and Find the marginal PDFs.
An insurance company handling malpractice cases is interested in estimating the average amount of claims against physicians of a certain specialty.
Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 87.81 and a standard deviation of 7.2.
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