Question

A survey was done that asked people to indicate whether they preferred to swim in a pool or in an ocean. The results are shown in the two-way table.

If 609 people were surveyed, what is the relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean?

hint: you will have to divide the part by the whole

Question 2 options:

.54


.30


.57


.09

Answer 1

Answer: the answer is divide 185 by 609

I chose Divide 239 by 609 and it was the wrong answer.

Answer 2

Given:
Pool swimming Ocean swimming Total
Age 30 and younger 228 54 282
Over 30 years old 142 185 327
total 370 239 609

Frequencies:
Pool swimming Ocean swimming Total
Age 30 and younger 228/609 = 0.37 54/609 = 0.09 282/609 = 0.46
Over 30 years old 142/609 = 0.23 185/609 = 0.30 327/609 = 0.54
total 370/609 = 0.61 239/609 = 0.39 609/609 = 1.00

The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30