To find the mean you add up all the numbers and divide that amount by the amount of numbers. Which looks like this:
7 + 20 + 8 + 15 + 10 + 17 + 7 + 13= 97
97 divided by 8 = 12.125
The mean is 12.125.
To find the median you first need to put the numbers in order and then try to find the number in the middle. If there is two numbers in the middle those two numbers are still the median:
7, 7, 8, 10, 13, 15, 17, 20,
The median(s) are 10 and 13.
Answer:
, option D
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 
.
From a random sample of 50 students, she found that 32 students read at least 1 book last month.
This means that 
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Confidence interval:
So the correct answer is given by option D.
Answer:
U never showed the thing below.
Step-by-step explanation:
0.41 is greater than 0.31
