FIND THE INDICATED PROBABILITY
2 answers:
Answer:
D) 33/82
Step-by-step explanation:
Given:
The number of women in the class = 66
The number of men in the class = 98
Now we have to find the total number of students.
The total number of students in the class = 66 + 98 = 164
We know that, the probability of an event = The number of favorable outcomes / The total number of possible outcomes.
Here we are asked to find the probability that the student is a women.
The number of favorable outcomes = 66 and the total number of possible outcomes = 164.
So, the probability that the student is a woman =
We can simplify this fraction. Here GCF of 66 and 164 is 2. So we need to divide both the numerator and the denominator by 2, we get
=
The answer is D) 33/82
You might be interested in
Answer:
a) X: number of years of education
b) Sample mean = 13.5, Sample standard deviation = 0.4
c) Sample mean = 13.5, Sample standard deviation = 0.2
d) Decrease the sample standard deviation
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 13.5 years
Standard deviation,σ = 2.8 years
a) random variable X
X: number of years of education
Central limit theorem:
If large random samples are drawn from population with mean and standard deviation
, then the distribution of sample mean will be normally distributed with mean
and standard deviation
b) mean and the standard for a random sample of size 49
c) mean and the standard for a random sample of size 196
d) Effect of increasing n
As the sample size increases, the standard error that is the sample standard deviation decreases. Thus, quadrupling sample size will half the standard deviation.