<span>Probability = 0.063
Fourth try = 0.0973
Let X be the number of failed attempts at passing the test before the student passes. This
is a negative binomial or geometric variable with x â {0, 1, 2, 3, . . .}, p = P(success) = 0.7
and the number of successes to to observe r = 1. Thus the pmf is nb(x; 1, p) = (1 â’ p)
xp.
The probability P that the student passes on the third try means that there were x = 2
failed attempts or P = nb(2, ; 1, .7) = (.3)2
(.7) = 0.063 . The probability that the student
passes before the third try is that there were two or fewer failed attmpts, so P = P(X ≤
2) = nb(0, ; 1, .7) + nb(1, ; 1, .7) + nb(2, ; 1, .7) = (.3)0
(.7) + (.3)1
(.7) + (.3)2
(.7) = 0.973 .</span>
Step-by-step explanation:
- (2×10^8)(2×10^-2)
- 4×10^8+(-2)
- 4×10^6
<h3>stay safe healthy and happy.</h3>
Answer:
Game stop is selling the cheaper video game.
Step-by-step explanation:
game stop=$23 each game amazon=$23.5 each game.
Answer:
2%
Step-by-step explanation:
Probability of rain, P(R) = 0.2
Probability of leak Given that it rains, P(L|R) = 0.1
Probability of leak Given that it does not rain, P(L|R') = 0
According to Baye's Rule:
P(L) = [P(L|R) * P(R)] + [P(L|R') * P(R')]
P(R') = 1 - P(R) = 1 - 0.2 = 0.8
P(L) = [0.1 * 0.2] + [0 * 0.8]
P(L) = 0.02 + 0
P(L) = 0.02
Hence, probability of a roof leak on Thursday is 0.02 = (0.02 * 100%) = 2%
Answer:
it's 8 inches luvvvv
Step-by-step explanation:
hope this helps
