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A population is estimated to have a standard deviation of 16. We want to estimate the population mean within 3, with a 90 percent level of confidence. How large a sample is required? (Round up your answer to the next whole number.)
consider the following regression modelsalaryin 1000 20 2x 5z 0.7xzwhere x is the number of years of experience
A random sample of 17 wolf litters in Ontario, Canada gave an average of x1= 4.9 wolf pups per litter, with estimated sample standard deviation s1 - 1.0.
Which approach is most preferred and why? Optimistic, conservative, or minimax regret. Also, is establishing the most appropriate approach before analysising the problem important for the decision maker?
the allowed fee for wedding services is 425. one ceremony provider is suspected of charging more than the allowed
suppose that a particular candidate for public office is in fact favored by 48 of all registered voters in the
question to help students improve their reading a school district decides to implement a reading program. it is to be
suppose you want to estimate the population proportion of statistics nerds at college. to do so you take a sample of
the gauss markov theorem shows that ols is blue . so we of course hope and expect that our coeffcient estitames will
S.D. of the sampling was 8 minutes. Shall we reject the null hypothesis of the mean >/= 28 in favor of the alternate hypothesis, mean
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
to perform a certain type of blood analysis lab technicians must perform two procedures. the first procedure requires
If 15 golfers have checked in using this process, what is the expected number and standard deviation of no-shows among these golfers? (Show computations)
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