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1) Suppose that is normally distributed with a mean of 20 and a standard deviation of 3. What is P(16.91 ≤x≤ 24.59)?
2) The length of time needed to complete a certain test is normally distributed with mean 31 minutes and standard deviation 6 minutes. Find the probability that it will take less than 40 minutes to complete the test.
3) Find a value of c so that P(Z ≤ c) = 0.52.
4) Consider a spinner that, after a spin, will point to a number between zero and 1 with "uniform probability". Determine the probability: P(1⁄6 ≤ X ≤ 17⁄30).
One measure of the overall sampling error in the entire distribution of sample means is the
the probability that it gets by the first inspector is 0.1. Of those that get past the first inspector, the second inspector will miss 5 out of 10. What fraction of the defective items gets by both inspectors?
Pollsters try to determine whether or not a person is a "likely voter" before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident tha..
draw a tree diagram representing the outcomes of flipping 3 coins with replacement between the flips. list the sample
1. The following probability distribution represents the number of people living in a Household (X), and the probability of occurrence (P(X)). Compute the Expected Value (mean), the Variance and the Standard Deviation for this random variable.
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
more genetics. in problem 33 we learned that for some diseases such as sickle cell anemia an individual will get the
suppose 40 of the vehicles passing through a toll booth are trucks and the rest are cars.a truck pays a 5 toll whereas
What are some typical applications of the Binomial and the Poisson probability distribution? Explain with examples. When is the Hypergeometric distribution used?
question what type of educational background do ceos have? in one survey 344 ceos of medium and large companies were
A statistical study reported that the drug was effective with the p-value of .042. Is this true? The effective sample may be found about 42 times in 1000 samples.
The consumer price index (CPI) is a measure of the average change in prices over time in a fixed market basket of goods and services typically purchased by consumers. One of the items in this market basket that affects the CPI is the price of oil ..
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