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Math10Exam2Winter2011

# Math10Exam2Winter2011 - Math 10 Winter 2011 FORM W Exam 2...

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3. At a certain location the carbon monoxide levels (in mg/m 3 ) in the atmosphere follow an unknown distribution with an average of 7 . 4 and a standard deviation of 2.4. Find the probability that for a random sample of 30 test measurements, the sample average carbon monoxide level is less than 7 . 2. 4. According to data from the USGS, on average 18 large earthquakes occur each year worldwide. (United States Geological Survey (USGS): Earthquakes magnitude 7 or higher: http://earthquake.usgs.gov/learn/topics/increase_in_earthquakes.php) Find the probability that at most 15 large earthquakes occur during a one year period. Questions 5 - 7 refer to the following: Suppose that the amount of time that it takes a worker to complete an online training module is uniformly distributed between 40 and 56 minutes.
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Math10Exam2Winter2011 - Math 10 Winter 2011 FORM W Exam 2...

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