Question

99 POINTS WILL GIVE BRAINLIEST!! No fake answers!
Keyshawn is bowling in a competition. He has a 26% chance of getting a strike each time he bowls. What is the probability that Keyshawn doesn't get a strike until after his first five attempts?
A) 0.19
B) 0.22
C) 0.78
D) 0.85

The probability of Coram making a free throw is 77%. What is the probability that he makes his first free throw within his first two shots?
A) 79%
B) 83%
C) 88%
D) 95%

Answer 1

He has a 26% of getting a strike, which means he has a 74% chance of not getting a strike ( 100% - 26% = 74%).

Multiply the chance of not getting a strike by the number of attempts:

0.74 x 0.74 x 0.74 x 0.74 x 0.74 = 0.22

The answer is B) 0.22

The probability of making a free throw is 77%, the probability of not making one would be 23% ( 100% - 77% = 23%).

Add the probability of making the first one ( 0.77) by the probability of making the second one multiplied by the probability of missing the second one ( 0.77x 0.23)

0.77 + (0.77 x 0.23)

0.77 + 0.18 = 0.95

The answer is D) 95%