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1. Where are the mean and
median located on a normal distribution.

2. Jay Olshansky from the
University of Chicago was quoted in Chance News as arguing that for the average
life expectancy to reach 100, 18% of people would have to live to 120. What standard deviation is he assuming for
this statement to make sense? (Assume
normal distribution.)

3. Cucumbers grown on a certain
farm have weights with a standard deviation of 2 ounces. What is the mean weight if 85% of the
cucumbers weigh less than 16 ounces?
(Assume normal distribution.)

4. If 75% of all families spend
more than $75 weekly for food, while 15% spend more than $150, what is the mean
weekly expenditure and what is the standard deviation? (Assume normal distribution.)

For
problems 225-228 consider the process of a drawing a card from a standard deck
and replacing it. Let A be drawing a
heart, B be drawing a king, and C be drawing a spade.

5. Are the events A and B disjoint? Explain.

6. Are the events A and B
independent? Explain.

7. Are the events A and C
disjoint? Explain.

8. Are the events A and C
independent? Explain.

9. Give me an example of two
events that are disjoint and independent.

10. What does the symbol È mean?

11. What does the symbol Ç mean?

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31 Jan 2018

Due Date: 01 Feb 2018
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