I have a question of statistics. I can't understand statistics at my college from my sir, please help!

+1 Aakash Ahmed · October 6, 2015
2 questions. I need solution of these with description PLease

1 -  In a consignment of bolts, 25% of the bolts are rusted and 30% are defective. Find the probability that a bolt selected at random is rusted or defective?

2- In a group 20 persons, 4 out of 7 women and 2 out of 13 men wear glasses. What is the probability that a person is chosen at random is a women or someone who wear glasses?

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+2 Tinashe Musonza · October 6, 2015
1. Probability rusted and defective = P(rusted)*P(defective) = (0.25)(0.30)

2. Probability is a women or wear glasses = P(woman) + P(wears glasses)
0 Aakash Ahmed · October 7, 2015
thanks that helps much!
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