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To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were interviewed. Of those, 115 had a swimming pool. How many people in the city might we expect to have a swimming pool? Round to the nearest whole number if necessary.

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Answer:

4600 people in the city might expect to have a swimming pool.

Step-by-step explanation:

There is a total population of  10,000 people in Springfield.

Out of these 1000 people 250 people were interviewed. Of those, 115 had a swimming pool.

i.e. in 250 people the proportion of people those who have swimming pool is: \(\dfrac{115}{250}=0.46\)

Hence among 10000 people the number of people who have swimming pool is: 0.46×10000=4600.

Hence out of 10000 people 4600 people have swimming pool.


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