279 Answered Questions for the topic Stats

04/22/14

What is the probability that a random sample of 17 persons will exceed the weight limit of 3,434 pounds?
The weight of people in a small town in Missouri is known to be normally distributed with a mean of 186 pounds and a standard deviation of 29 pounds. On a raft that takes people across the river, a... more
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Stats Math

03/30/14

Statistics Math Problem
In a standardized test for lawyers, scores are normally distributed and the standard deviation is known to be 28.5 points. How large of a sample must to find the estimate the mean score of all... more
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Stats Math

03/30/14

Math Stats Help?
In a Gallop poll of 567 randomly selected adults, 274 said they were underpaid. Construct a 95% confidence interval estimate for the percentage of all adults who said they were underpaid.
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Stats

03/17/14

A box contains 8 red, 3 white, and 9 blue balls. Draw 3 at random without replacement
 Compute probability that all 3 are red ii) all 3 are white iii) 2 are red and 1 is white iv) at least 1 is white
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