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| Following is a
partial list
of topics that may be covered in Stat 141 with a sample problem that illustrates each topic. Work the problem and click on the Answer button to see how
you did. |
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Descriptive
Statistics |
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The figure below is a histogram
showing the distribution of blood pressure for all 14,148 women in
the Drug Study. Is the percentage of women with blood
pressures above 130 mm around 25%, 50%, or 75%? |
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Each of the following lists has an
average of 50. For which one is the spread of the numbers around the
average biggest?
a) 0, 20, 40, 50, 60, 80, 100 |
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Use a normal table to find the value
of z.
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Probability |
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Five cards are dealt face down from a
well shuffled deck. Find the chance that the 5th card is the queen
of spades. |
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The Adams family has three children
and two consecutive children are of the same sex. What is the
probability that they have two boys and a girl? |
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Sampling |
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A coin is tossed 2000 times. The
standard error for the number of heads is _____. |
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A university has 30,000 registered
students. As part of a survey, 900 of these students are chosen at
random. The average age of the sample students turns out to be 22.3
years, and the SD is 4.5 years. Find a 95%-confidence interval for
the average age of all 30,000 registered students. |
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A die is rolled 100 times. The
total number of spots is 368 instead of the expected 350. Can this
be explained as a chance variation or is the die loaded? |
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Updated 11/07/08 . For broken links or comments, please email vzabrocki@msubillings.edu
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