Probability of not hitting target is 0.8
1-(0.8)^n > 0.6
(0.8)^4 = 0.4096
so (0.8)^5 is less than 0.4 for sure, so n =5 is the answer.
1-(0.8)^n > 0.6
(0.8)^4 = 0.4096
so (0.8)^5 is less than 0.4 for sure, so n =5 is the answer.
Statistics : Posted by salilbagai • on 27 Nov 2021, 15:19 • Replies 3 • Views 2547
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