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Tweleve cases of leukemia are reported in people living in a particular census tract over a 5 year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer incidence rates?
The instructor plans to draw a histogram of the 1,100 sample proportions. What will be the approximate mean for the 1,100 sample proportions?
If random sample of thirty six customer transactions points out that sample mean withdrawal amount is $172, is there evidence to think that population mean withdrawal amount is no longer $160? Determine the mean of data above?
The Oakland Bombers professional basketball team just missed making the playoffs last season and believes it needs to sign only one very good free agent to make the palyoffs next season.
Determine standard normal area for each of the following: Standard normal area P(1.22
Critically discuss the reasons for studying statistics? Choose five random numbers between 70-100. Calculate the mean, and midrange of these numbers.
A manufacturing process makes items whose weights are normally distributed. It is known that 22.57% of all the items made weigh between 100 grams up to mean and 49.18% weigh from the mean up to 190 grams. Find out the standard deviation.
Medicare spending per patient in different U.S. metropolitan areas may differ. Based on the sample data below, is the average spending in the northern region significantly less than the average spending in the southern region at the 1 percent leve..
Confirm that these statements are accurate by finding the geometric mean rate of increase.
A new car is designed to run a mean of at least 50 000 kilometers before its first tune-up. Tests with 30 cars show a sample mean of 49 500 kilometers and a sample standard deviation of 1000 kilometers.
In what situations might you use probability as a manager to approach business-related problems? What are the advantages to using probability concepts in business decisions?
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
The weight of cans of fruit is normally distributed with a mean of 1,000 grams and a standard deviation of 50 grams. What percent of the cans weigh 860 grams or less?
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