3 years ago

If I have a standard deviation of 6, what is the variance?

Mathematics

1 answer:

cluponka [151]3 years ago

8 0

I think 3 or its 2 if not any answer give me the answer choices

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in a city school of 1,200 students, 40% of the students are on the honor roll, 60% have a part-time job, and 22% are on the hono

Alexus [3.1K]

Let
A = event that the student is on the honor roll
B = event that the student has a part-time job
C = event that the student is on the honor roll and has a part-time job

We are given
P(A) = 0.40
P(B) = 0.60
P(C) = 0.22
note: P(C) = P(A and B)

We want to find out P(A|B) which is "the probability of getting event A given that we know event B is true". This is a conditional probability

P(A|B) = [P(A and B)]/P(B)
P(A|B) = P(C)/P(B)
P(A|B) = 0.22/0.6
P(A|B) = 0.3667 which is approximate

Convert this to a percentage to get roughly 36.67% and this rounds to 37%

Final Answer: 37%

4 0

3 years ago

8.9× 10 to the power of 4

Wittaler [7]

Assignment: $\bold{Solve \ 8.9\cdot \:10^4}$