Assuming that the actual question reads lines b and c are perpendicular to line d
we are given that c is perpendicular to line d and parallel to line a. Since b is also perpendicular to line d, a b and c must all be parallel (draw it out will make a lot more sense)
So b is also parallel to line a
Thirty six thousandths = 0.036
The range of the means is 0.5
<h3>How to find the mean</h3>
Mean of S1
= 5 + 6+ 6+ 2
= 19/4
= 4.75
Mean of S2
= 4 + 8 + 4 + 3
= 19/4
= 4.75
Mean of s3
= 4 + 2 + 6+ 5
= 17/4
= 4.25
Range of sample means = 4.75 - 4.25
= 0.5
c. the true statements here is that
- The closer the range of the sample means is to 0, the more confident they can be in their estimate.
- The mean of the sample means will tend to be a better estimate than a single sample mean.
Read more on mean here:
brainly.com/question/6281520
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