Answer:
Step-by-step explanation:
There are 11 students in total.
6 girls.
and 5 boys.
so the probability of selecting a girl is 1/5 because 5 boys or it could be 1/11 if i am not mistaken.
(which i might be)
Answer:
I don't know, is it?
Step-by-step explanation:
Simplify
Answer:
2/3
Step-by-step explanation:
Slope is rise over run which is 2/3
Answer:
The 92% confidence interval for the actual proportion of all office workers who are able to take every telephone call is (0.3676, 0.4324).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
92% confidence level
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 92% confidence interval for the actual proportion of all office workers who are able to take every telephone call is (0.3676, 0.4324).