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Suppose you were trying to decide which of two machines to purchase. Furthermore, suppose the length to which the machines cut a particular product part was important. If both machines produced parts that had the same average length, what other consideration regarding the lengths would be important? Why?
a) Median length, avoiding outliers
b) Variability, greater variation is more desirable
c) Variability, less variation is more desirable
d) Total length, which machine is better overall
Use the binomial distribution in the Data Analysis add - in to simulate the distribution of men and women among the next ten arrivals at an emergency room, assuming that, on average, six people out of ten who arrive are men.
Why might supposition of normal population be doubtful? Problem arises when?
An elementary school principal would like to know how many hours the students spend watching TV each day. A sample of n = 25 children is selected, and a survey is sent to each child's parents.
Give an example of a situation in which multiple linear regression, discriminate analysis, canonical correlation, and multivariate analysis of variance might be used.
10 people taste wine A and wine B, X= denote the number prefer A. Assume that all others prefer B. These people random sample..
In a bumper test, three types of autos were deliberately crashed into a barrier at 5mph, and resulting damage was estimated. five test vehicles of each type were crashed.
The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from Chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches..
Compute the score based on their appropriate class means and standard deviations:
Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.
Compute fraction of the employees cost between $1,500 and $2,000 per year? Evaluate percent that didn't have any dental expense.
When we have data that are measured at the interval/ratio level of measurement, there are:
What percent of the sample means will be greater than 135 but less than 148 seconds? (Round your answer to 2 decimal places.)
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