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Consider a normally distributed population with a mean of 20 and a variance of 9. A sample of 81 results in a mean of 21. What is the p-value associated with the hypothesis that the mean is no longer 20?
a large shipment of computer chips is known to contain 8 defective chips. suppose you select 500 chips at random.a what
Jacquemyn et al. (A-21) conducted a survey among gynecologists-obstetricians in the Flanders region and obtained 295 responses.
Take a unit cube in three dimensions. Cut the cube by a plane perpendicular to the line from its corners (0, 0, 0) and 1, 1, 1).
Immigration (optional). In the setting of Exercise, what is the probability of getting a sample in which more than 51% of those sampled think that the level.
Laptop computers produced by a company have an average life of 38.36 months. Assume that the life of a computer is exponentially distributed.
You are planning to purchase a toy robot for your nephew's birthday. The robot has 5 electronic components. There is a 1% probability that any one of the components will be defective. If two or more of the components are defective, the robot wi..
What does this statistic tell you about Americans' support for legalizing marijuana?
suppose there are 288 best buy stores in utah. the ceo of best buy would like to introduce a new line of mutant
Is P(K + 1) = P(K)(365-K)/365 and, If so, why? Find the smallest class size K for which the probability that two or more students have the same birthday exceeds 0.5.
Profit suppose that a manufacturer produces two brands of a product, brand 1 and brand 2. Suppose the demand for brand 1 is x = 70 - p1 thousand units.
If the true mean diameter of all bearings produced is 35 mm, what is the probability of the test indicating that the machine is out of control?
"MagTek" electronics has developed a smart phone that does things that no other phone yet released into the market-place will do. The marketing department is planning to demonstrate this new phone to a group of potential customers, but is worried abo..
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