Answer: D (I think)
Step-by-step explanation:
Answer:
The standard error of the mean is 0.0783.
Step-by-step explanation:
The Central Limit Theorem helps us find the standard error of the mean:
The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation , a large sample size can be approximated to a normal distribution with mean and standard deviation .
The standard deviation of the sample is the same as the standard error of the mean. So
In this problem, we have that:
So
The standard error of the mean is 0.0783.
The greatest common factor is 3y.
9 - 1,3,9
12 -1,3,4,12
There is a y in both terms.
So, 3y is the greatest common factor.
Answer:
a) 0.15
b) 0.2
c) 0.6
Step-by-step explanation:
We are given the following in the question:
A: Stopping at first signal
B: Stopping at second signal
P(A) = 0.35
P(B) = 0.55
Probability that he must stop at at least one of the two signals is 0.75
a) P(at both signals)
0.15 is the probability that motorist stops at both signals.
b) P(at the first signal but not at the second one)
0.2 is the probability that motorist stops at the first signal but not at the second one.
c) P(at exactly one signal)
0.6 is the probability that the motorist stops at exactly one signal.