The answer is option B "false". A marginal distribution is a set of random variables. (not on a column or graph) Also a marginal distribution is a <span>measurement used in the fields of statistics and probability.
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Answer:

Step-by-step explanation:
Given that,
A line 7x - 3y = 68 and containing the point (8, -8).
The equation can be written as :

The slope is :7/3
Line is perpendicular so use m = –3/7

So, required equation is :

Answer:
the answers to this are x= 1 and y= 9
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size
Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))
Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))
Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.