A company claims that the mean of a population exceeds 120. A random sample is taken of size 225. It yielded a mean of 123 and a sample standard deviation of 25. Does the data support the company’s claim at a level of significance of α = .05?

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

95.03 is the answer. hope this !

about 0.75 hours

step-by-step explanation: