Homework Help for Mathematics (page 993)
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PROBLEM 04: An experiment consists of making two selections, one after another, from a box that contains 1 red ball, 2 green balls, and 1 yellow ball, and noting the color of each ball selected. If the red ball is selected on the first reach into the box, then it is replaced before the second selection is made, but if the red ball is not selected on the first reach into the box, then the selected ball is not returned to the box before the second selection is made. How many outcomes are in the sample space for this experiment? A) 7 B) 5 C) 9 D) 6 E) 8 N) none of the above
7. (10 marks) A ladder initially leans against a vertical wall, with its bottom resting on flat ground. Then the bottom starts to slide away from the wall at a rate of 2 m/min. At the moment that the top of the ladder is 4 m above the ground, it is sliding down the wall at 1.5 m/min. What is the length of the ladder?
9. The premium on an insurance policy is $500 per quarter payable at the start of each quarter. If the policy holder wishes to pay two year's premiums in advance, how much (rounded up to the nearest dollar) should be paid provided that interest is 6% compounding quarterly ? (a) $3,743 (b) $3,800 (c) $3,300 (d) $3,662
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