O A. A prediction based on the data is reliable, because there are no noticeable differences among the samples.
OB. A prediction based on the data is not completely reliable, because
the mean of sample 1 is noticeably lower than the means of the
other two samples.
C. A prediction based on the data is not completely reliable, because
the means of samples 2 and 3 are too close together.
OD. A prediction based on the data is reliable, because the means of
samples 2 and 3 are very close together.

practice. practice. practice.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

answer: an 8-foot rope is tied from the top of a pole to a

stake in the ground, as shown in the diagram

below

step-by-step explanation: