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A pizza restaurant offers 11 different toppings: 6 of them are vegetarian and 5 of them are non-vegetarian. A customer selects her first topping at random and then selects another one at random from the remaining toppings. What is the probability that both her selections are vegetarian?
Report your answer as an exact fraction.
the table below gives information on coded length measurements in a machining process. the data shown are macrx and r
A catalog sales company promises to deliver orders placed on the Internet within 3 days. Follow up calls to a few randomly selected customers show that a 95% confidence interval for the proportion of all orders that arrive on time is 88% ; 6%. Wha..
As a part of the feasibility study, they wish to estimate the mean weekly child-care cost of their employees. A sample of 10 employees who use child care reveals the following amounts spent last week.
In a recent study 90 percent of the homes in the United States were found to have largescreen TVs. In a sample of nine homes, what is the probability that:
we have an urn with three green balls and two yellow balls. we pick a sample of two without replacement and put these
Calculate the mean of the 20 samples and draw a histogram showing the 20 sample means and describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).
If the probability that she dies in the coming year is 0.001, what is the expected gain for the insurance company?
Let a b in R and let f be continuous from [a, b] into R. Show that f takes all values between f (a) and f (b). Hint: Apply parts (a), (b) and (c).
find the sample size needed to estimate the percentage of adults who have consulted fortune tellers. use a 0.03 margin
A normal distributed population has a mean of 250 pounds and a standard deviation of 10 pounds. Given n = 20, what is the probability that this sample will have a mean value between 245 and 255 pounds?
let y be a uniform random variable defined over the interval 02. find an expression for the rth moment of y about the
If you are given a choice to decide whether to buy a new manufacturing operation of one of your competitors in order to expand business. The choices are to buy the complete operation, only the property, or not o buy anything. The results in Rands ..
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