C) A researcher has extracted two samples from the same target population, sample A and sample B. Sample A has a mean of 25 kg w
1 answer:
You might be interested in
To find the solution we will first find the difference between each number and mean, and then substitute the value in the formula of standard deviation.
The standard deviation is 8.4477 and the variance is 71.40.
Given to us
- Test scores of Adimas = (76, 87, 65, 88, 67, 84, 77, 82, 91, 85, 90)
- Mean = 81
difference between each number and mean,
= 25 + 36 + 256 + 49 + 196 + 9 + 16 + 1 + 100 +16 + 81
= 785
Variance =
= 71.40
Hence, the standard deviation is 8.4477 and the variance is 71.40.
Learn more about Standard Deviation:
Answer:
Step-by-step explanation:
we are given
Let's assume angle as theta
so, we get
now, we can use unit circle and find theta
and we get
So, solution is