Answer:
(0.6613, 8.3387)
Step-by-step explanation:
Let the heights of men be the first population and the heights of women be the second population. Then
We have
,
,
and
,
,
. The pooled
estimate is given by

The 99% confidence interval for the true mean difference between the mean height of the men and the mean height of the women is given by (if the samples are independent)
, i.e.,

where
is the 0.5th quantile of the t distribution with (15+7-2) = 20 degrees of freedom. So
, i.e.,
(0.6613, 8.3387)
The answer is B.)
This is because Since there is one value of y
for every value of x in (-1,-3),(3,-7),(7,-11),(9,-13)
, this <u>relation</u> is a <u>function</u>.
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Answer:
c
Step-by-step explanation:
Answer:
Zelie should have divided both numbers by 14 to find the scale (2)
Step-by-step explanation: