Answer:
The answer is d
Step-by-step explanation:
2/5 of 150 is 60. So 60 people leave the train leaving 90 people on it. 90 + 35 is 125. The answer should be 125.
Good luck!!
Answer:
The probability that at least one of the 20 4th graders is addicted to comic books is 0.12.
Step-by-step explanation:
Let X = number of hours a 4th grader reads comics and Y = number of 4th grader addicted to reading comics.
The random variable X is continuous and follows a normal distribution with mean, μ = 6 hours and standard deviation, σ = 2 hours.
And the random variable Y is discrete and follows a binomial distribution with success defined as a 4th grader is addicted to reading comics.
Compute the probability that a 4th grader is addicted to reading comics as follows, i.e. determine the value of P (X > 11) .
Use the <em>Z</em>-table for the probability value.
Now compute the probability that out of 20 fourth graders at least 1 is addicted to comics as follows:
The Binomial probability function is:
Compute the value of as follows:
Thus, the probability that at least one of the 20 4th graders is addicted to comic books is 0.12.
Answer:
-29v+145
Step-by-step explanation:
-4(5v – 30 – 6) – 9v
-20v+120+25-9v
-29v+145