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The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed. If the standard deviation is $4.58, find the probability that a randomly selected employee earns less than $5.43.
a) 0.313 = 31.3%
b) 0.168 = 16.8%
c) 0.436 = 43.6%
d) 0.345 = 34.5%
Which of the following(s) can be considered (a) variable(s)?
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Suppose the sample variance for 30 parts turns out to be s 2 = .0005. Use α = .05 to test whether the population variance specification is being violated.
Find out optimal decision
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..
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