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The fill volume of cans produced by a certain machine is normally distributed with mean 12 oz and standard deviation .03 oz. [4] a. What proportion of cans contain less than 12 oz? [4] b. The process by means of which the mean was set to 12 oz can actually be adjusted through calibration. To what value should the mean be set so that 99% of the cans will contain 12 oz or more?
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcox on rank-sum test, evaluate the significance of the results, assuming there are no ties.
A sample of 26 automobiles 2 yrs. old showed a standard deviation of $170. What is the test statistic for testing the difference between these population variances at alpha =.01?
Provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities.
A coin is tossed 20 times. A person, who claims to have ESP is asked to predict the outcome of each flip in advance. She predicts correctly on 14 tosses.
Based on p=.60, probability that a randomly selected homeowners will say no to newspaper subscription.
Teenage boys is approximately normal with and Levels above 200 warrant attention. Find the probability that a teenage boy has a cholesterol level greater than 215.
Students applying for admission to an MBA program must submit scores from the GMAT test, which includes a verbal and a quantitative component.
Calculate the mean and standard deviation of the sample mean based on data from 100 stores.
Find the probability that the first marble drawn was blue given that the second marble drawn was red and what is the range space RY of this new random variable Y and give the probability distribution of Y in tabular form
If there are 81 fraternity members, how much should they buy so that using the normal approximation they are 93.32% sure they will not run out?
Identify the null hypothesis, alternative hypothesis, test statistic, p-value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
Polls showed the two main candidates in the 2004 presidential election were nearly tied on the day before the election. To predict the winner a newspaper would like to have a poll that has margin of error less than 1%. Roughly how large a sample w..
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