 ## Where are the mean and median located

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?

Pending
31 Jan 2018
Due Date: 01 Feb 2018

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