See picture for solution to your problem.
Answer:
It's D
Step-by-step explanation:
Stay frosty
Using it's concept, the standard deviation of the data is of 3.742.
<h3>What are the mean and the standard deviation of a data-set?</h3>
- The mean of a data-set is given by the <u>sum of all values in the data-set, divided by the number of values</u>.
- The standard deviation of a data-set is given by the square root of the <u>sum of the differences squared between each observation and the mean, divided by the number of values</u>.
For this data-set, the mean is:
M = (1 + 4 + 4 + 4 + 4 + 6 + 5)/7 = 4.
Hence the standard deviation is:

More can be learned about the standard deviation of a data-set at brainly.com/question/12180602
#SPJ1
Answer:
tam 20 = 4 / x
x = 4 /tan 20 = 4 / .364 = 10.99
Answer:
I think its A
Step-by-step explanation: