germaniranda619
01.07.2019 •
Mathematics
Explain how to solve this . the answer choices are listed in the image.
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Ответ:
Consider the following scenarios where:
r means "rained" which has a probability of .75N means "doesn't rain" which has a probability of .25* means it is irrelevant because the event already occurredScenario Probability
NN*** (.75)⁰(.25)² = .0625
rNN** (.75)¹(.25)² = .0469
rrNN* (.75)²(.25)² = .0352
rrrNN (.75)³(.25)² = .0264
TOTAL = .1710
This didn't produce one of your options, but .1875 is the closest.
ANOTHER WAY TO SOLVE:
(not rained)² x (rained)³ x Abar - # of times the event occurs
= (.25)² x (.75)³ x Abar - 4
The only problem with this method is that I don't know how to find Abar.
Ответ:
i dunno
Step-by-step explanation: