PLEASE I REALLY DONT HAVE ENOUGH TIME PLEASE I BEG I REALLY NEED PLEASE I BEG YOU I DON'T MUCH TIME ONLY 1HOUR AND I NEED TO DO
A LOT IF YOU MEDL PLEASE I
PROMISE I PROMISE PLEASE HELP!!!!!!
PROMISE I PROMISE PLEASE HELP!!!!!!
1 answer:
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The point-slope form:
m - slope
The formula of a slope:
We have the points (-2, 3) and (1, -3). Substitute:
The standard form: Ax + By = C. Convert:
<em>use distributive property</em>
<em>subtract 3 from both sides</em>
<em>add 2x to both sides</em>
Answer:
a. 0.52 = 52% probability that Linda gives the correct answer to a question.
b. 0.7692 = 76.92% probability that Linda knows the answer
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Supplies the correct answer:
Event B: Knows the answer
A. What is the probability that Linda gives the correct answer to a question?
0.4(knows the answer)
1/5 = 0.2 of 1 - 0.4 = 0.6(guesses the answer). So
0.52 = 52% probability that Linda gives the correct answer to a question.
B. What is the conditional probability that Linda knows the answer, given that she supplies the correct answer?
Intersection of events A and B is knowing the answer and giving the correct answer, which means that
The desired probability is:
0.7692 = 76.92% probability that Linda knows the answer