Example of a binomial experiment
Tell if the following experiment is an example of a binomial experiment: A basketball player is going to attempt free throws until he gets a hit. The number of attempts until a hit is recorded.
A. yes, binomial B. no, not binomial
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The loss due to a flood is modeled by a random variable x with density function: f(x) = (48-x)/1152. Given that a loss exceeds 15 what is the probability it is less than 23?
How do you conduct a test for a hypothesis that two independent population means with known population standard deviations are equal?
The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters.
A sample of Zach Johnson's drives shows that he successfully made the fairway in 40 out of 56 drives. Construct a hypothesis test to evaluate the claim that Zach's true (population parameter) proportion of fairway hits is greater than .75.
a. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 75 seconds, what sample size should be used? Assume 95% confidence. b. If we want to estimate the population mean time for previews at movi
The mean life of a particular brand of light bulb is 1000 hours and the standard deviation is 50 hours. Tests show that the life of the bulb is approximately normally distributed. It can be concluded that approximately 68% of the bulbs will last b
the compressive strength of samples of cement can be modeled by a normal distribution with a mean of 6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter.
Andrea, a self-employed individual, wishes to accumulate a retirement fund of $400,000. How much should she deposit each month into her retirement account, which pays interest at a rate of 3.5%/year compounded monthly, to reach her goal upon retir
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