The advertising department of a nationally circulated magazine wishes to estimate the mean age of. its subscribers to within 0.5 year with 90% confidence. if they estimate that the standard deviation of the ages of their subscribers is 5 years, find the required sample size. a. 165 b. 17 c. 271 d. 45 1 points first question previous question question 14 of 30 next question last question

the answer is a

step-by-step explanation:

because your just changing the position of where the shape is

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