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In a statistics class survey, students reported their heights in inches. The instructor entered the data into a computer file and used statistical software to find separate five-number summaries for men and women in the class.
In the five number summary for men, the minimum height was 17 inches, an obvious outlier. What is a possible reason for this outlier, and what should the instructor do about it?
a numerical measure of linear association between two variables is thea. coefficient of variationb. variancec. standard
the shape of the distribution of the time required to get an oil change at a 15 minute facility is unknown. however
To find out whether living next to high-voltage power lines increases your chance of getting cancer, researchers selected various homes at random.
a teacher instituted a new reading program at school. after 10 weeks in the program it was found that the mean reading
The reason for this difference is not understood. Here are the summary data. Determine if the male scores are significantly higher than the female scores.
Define and mention characteristics of normal probablity curve, Distinguish a group of 500 people into three groups assuming that the attribute of grouping is normally distributed.
a sample of size 80 is to be used to test the hypotheses h0 mu29 vs. ha mugt29where mu is the true average age of a man
The evidence supports the manufactuer claim at the .05 significance level. Suppose 49 bulbs were tested with the folowing results: x-bar = 827.5 hours, s= 70 hours. Conduct the test using alpha=.05.
a company purchases shipments of machine components and uses this acceptance sampling plan. randomly select and test 20
Suppose that 40% of participants consume caffeine and smoke. If 8 participants are evaluated, what is the probability that: Exactly half of them consume caffeine and smoke?
from the data bank select a random sample of 30 individuals. a. use the z test to test the hypothesis for iq that h0
construct fishers ideal index for the given information and check whether fishersformula satisfies time reversal and
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