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15 Apr 2026, 10:17
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yes, 0.14 is not greater than 0.8 which is why it contradicts the hypothesis
Gmat860sanskar
15 Apr 2026, 19:37
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Puranjaysapra
Hmm, I think you misunderstood the Hypothesis. As Marty correctly pointed out :
"A simple way to determine whether the probability that a participant will produce at least one correct image is at least 80 percent is to determine whether the probability that a participant will NOT produce at least one correct image is less than or equal to 20 percent."
Also, to find probability for at least one event, correct logic is :
[color=#000000]If success probability = p, failure = q =1−p, and n trials:
P(at least one success)=1−(q)^n
Currently your logic just solve for : P(exactly one success in one fixed position) and here you are just assuming that success can be at one fixed position.
I hope this helps
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