Answer:
So, the sample mean is 9.99.
So, the standard deviation is 0.32.
Step-by-step explanation:
From Exercise we have the next numbers: 9.7 9.9 10.3 10.1 10.5 9.4 9.9 10.1 9.7 10.3.
So, N=10, because we have 10 numbers.
We calculate the sample mean:
So, the sample mean is 9.99.
We use the formula for standard deviation:
Now, we calculate the sum
Therefore, we get
So, the standard deviation is 0.32.