A sample of 100 wood and 100 graphite tennis rackets are taken from the warehouse. If 15 wood and 20 graphite are defective and

Question

3 years ago

12

one racket is randomly selected from the sample, find the probability that the racket is wood or dEfective

2 answers:

emmainna [20.7K] · Answer 1 · 2022-05-19T14:40:48+03:00

7 0

100w, 100g
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85w, 80g, 15dw, 20dg

all w+dw+dg = 120/200 or 3/5

Liula [17] · Answer 2 · 2022-05-19T17:08:31+03:00

Answer: Our required probability is 0.675.

Step-by-step explanation:

Since we have given that

Number of wood tennis rackets = 100

Number of graphite tennis rackets = 100

Number of defective wood tennis rackets = 15

Number of defective graphite tennis rackets = 20

So, Probability that the racket is wood or defective is given by

$P(wood)+P(defective)\\\\=\dfrac{100}{200}+\dfrac{35}{200}\\\\=\dfrac{135}{200}\\\\=0.675$

Hence, our required probability is 0.675.