A set of data has a mean of 12 and a standard deviation of 3. A data point of the set has a z-score of 1.3. What does a z-score of 1.3 mean?
The data point is 1.3 standard deviations away from 3
The data point is 1.3 standard deviations away from 12.
The data point is 3 standard deviations away from 1.3.
The data point is 3 standard deviations away from 12.
its B
As per Newton's II law we know that

rate of change in momentum is Net outside force on the object
now here we will have if net outside force will be zero
then we can say

so from above equation we can say

and hence we have

so the correct answer will be
<em>3.) in the absence of outside forces</em>
It is called a metric system!