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High School GPA is normally distributed with a mean of 3.06 and a standard deviation of 0.40. The probability of a randomly chosen student having a HS GPA between 3.54 and 3.80 is
a) 0.4678
b) 0.0829
c) 0.8527
d) 0.3849
What can we say about the form or way of the distribution of the average or median of the sample?
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It is believed that the range of hourly wages paid to auto mechanics in a large city is $9 (range approx. = 4sigma-squared). If we assume that hourly wages are approximately normally distributed,
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