What is the probability that a randomly selected student has a cell phone and is from School B?

Mathematics

2 answers:

erastova [34]3 years ago

4 0

Answer:

Step-by-step explanation:

Because there is 1000 people in total, the percentage of people in the school B with cellphones would be solved by finding 408/1000=.408. If you round .408 to the nearest hundredth, because the thousandth place is 8, it would round up to .41

puteri [66]3 years ago

3 0

Answer:

$\huge\boxed{\text{(B)}\ 0.41}$

Step-by-step explanation:

This table will prove to be helpful to find the probability that a student has a cell phone and is from School B.

First off, we know that a total of 1000 students were interviewed, both from School A and from School B.

We also know that 479 of those 1000 were from School B (total on the right).

Looking further into School B, we can see that 408 students from school B have a cell phone.

Therefore, we can find the probability by finding 408 / 1000.

$408 \div 1000 = 0.408 \approx 0.41$

Therefore, the probability that a randomly selected student is from School B <em>and</em> has a phone is 0.41, or 41%.

Hope this helped!

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