Question 3 (10 points) A medical researcher wants to determine the percentage of females that take
vitamins. She wishes to be 90% confident that the estimate is within 4% of the true
proportion. If a study suggested that about 17% of females take vitamins, what
minimum sample size should she use?
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answer: 25 is the correct answer

step-by-step explanation:

figure c

step-by-step explanation:

hope this .

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.