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If a normally distributed group of test scores have a mean of 80 and a standard deviation of 14, find the percentage of scores that will fall below 60.
Construct a 95% con dence interval for the true mean. Based on the con dence interval, is the true mean likely to be 15g and find the minimum weight of the heaviest 5% of cans of soup produced.
What is the probability that a randomly selected driver will take less than 13.2 minutes to get an oil change? Give your answer to 4 decimal places.
A company that makes cartons finds that the probability of producing a carton with a puncture is 0.07?, the probability that a carton has a smashed corner is 0.
With the test statistic you chose, work out the problem with solution using .05 level of significance if it applies.
specimens of blood from 10 different animals were analyzed for blood count say y in units of 100 and packed cell volume
Determine the level of measurement for each of your independent variables and the dependent variable (in terms of categorical/discrete or continuous/scale)
Sketch the probability density function of X¯. On the same graph, sketch the probability density function of the sample mean X from a sample of 16 observations.
the number of calories in a 12-ounce serving of randomly-selected regular budweiser and miller lite beers is listed. is
How many more days should be included in the sample to be 95% sure the population mean μ is within $50 of the sample mean x?
a manufacturer of window frames knows from experince that 1 percent of the production will have some type of minor
Students in a class were asked whether they preferred an in-class or a take-home final exam and were then categorized as to whether or not they had received.
The manager of a local gymnasium has determined that the length of time patron spend at the gymnasium is normal distributed with mean 80minutes and standard deviation 20 minutes. What is the patrons who spend more than 120 minutes at the gymnasium..
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