then a second chip drawn. What is probability the (a) a white chip on the first

Question

then a second chip drawn. What is probability the (a) a white chip on the first draw? and a red on the (b) a white chip on the first draw second? (c) two green chips being drawn? chip (d) a red chip on the second, given that a white was drawn on the first? 2-17 Evertight, a leading manufacturer of quality nails, produces 1-, 2-, 3-, 4-, and 5-inch nails for various uses. In the production process, if there is an over- run on the nails are slightly defective, they are placed in a common bin. Yesterday, 651 of the 1-inch nails, 243 of the 2-inch nails, 41 of the 3-inch nails, 451 of the 4-inch nails, and 333 of the 5-inch nails were placed in the bin. (a) What is the probability of reaching into the bin and getting a 4-inch nail? (b) What is the probability of getting a 5-inch nail? means the problem may be solved with QM for Windows; x means the prob d with QM for Windows and/or Excel QM.

Explanation / Answer

2-17

There are total 1719 nails in the bin
(a)
probability of getting a 4-inch nail from the bin = 451/1719 = 0.2624

(b)
probability of getting a 5-inch nail from the bin = 333/1719 = 0.1937

(c)
total number of nails which are 3-inch or less = 935
the required probability = 935/1719 = 0.5439

1-inch 651 2-inch 243 3-inch 41 4-inch 451 5-inch 333 Total 1719

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