the answer is 38.53 becauase it is...
4 hours equals 12 miles
1 hour equals 3 miles
Using it's concept, it is found that the variance of the data-set is of 1.15.
The mean of a data-set is the <u>sum of all observations divided by the number of observations,</u> hence:
The variance is the <u>sum of the differences square between each value and the mean, divided by the number of values</u>. Hence:
A similar problem is given at brainly.com/question/1527299
<span><span><span><span><span>n<span>(3)</span></span><span>(2)</span></span>n</span><span>(5)</span></span><span>(4)
</span></span><span>=<span><span><span><span><span>n*3</span>*2</span>*n</span>*5</span>*4
</span></span><span>=<span>120*<span>n2
</span></span></span><span>=<span>120<span>n<span>2</span></span></span></span>