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The true highway mileage, Y, of a specific brand of hybrid vehicle has a normal distribution with a mean of 42 and a standard deviation of 1.5. Find the probability that a randomly selected hybrid vehicle gets more than 38 miles to the gallon.
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
When using the normal distribution (empirical rule) to obtain the bounds for a 99.73 percent of the values in a population, the interval generall will be _________________ the interval obtained for the same percentage if Chebyshev's theorem is ass..
Find the probability that the surgury is successful for fewer than six patients
Is it reasonable for the manufacturer to claim that the drill bits will last 2.5 hours?
A retailer wants to estimate with 99% confidence the number of people who buy at his store. A previous study showed that 15% of those interviewed had shopped at his store.
Determine the test criteria that would be used to test Ho: u 1.0 with n=18 and significance level of 0.01 using the classical approach.
Compare the percentage found in b) to percentage given by Empirical Rule and Chebyshev's Rule. (Make a table 3 x 3).
in a certain city 30 of the families have a mastercard 20 have an american express card and 25 have a visa card.
Replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected at random, find the probability that it will be defective.
what does the p-value tell the business statistician especially in terms of the normal curve? if the p-value is smaller
Solve each compound inequality. State the solution set using interval notation and graph it.
according to police sources a car with a certain protection system will be recovered 88 of the time. find the
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