Question 1
The speed at which an automated assembly line produces a product follows a normal distribution, with a mean production time of 32.20 seconds and a standard deviation of 1.05 seconds. What is the probability that a product requires more than 34 seconds to produce?
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0.0436
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0.1710
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0.9564
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0.0038
Question 2
Three hundred college students are randomly selected and their height is recorded. To support a particular statistical analysis, the data set is tested for normality using the normal probability plot shown here. What conclusion is correct concerning this data set?
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The heights are not normal because the plot does not conform well to a linear pattern, but has a curvilinear pattern instead.
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The heights are normal because the plot does not conform well to a linear pattern, but has a curvilinear pattern instead.
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The heights are not normal because the pattern at a normal score of 0 is approximately linear (vertical).
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The heights are normal because the pattern at a normal score of 0 is approximately linear (vertical).
(a) The site of Zhoukoudian outside of Beijing, China, spans several hundred thousand years and (b)
In 2010 protesters in Washington, D.C., demanded that the Obama administration support liberalized i
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Fundal height measurement