Question

A group of students were surveyed to find out if they like bike riding and/or roller skating as a hobby. The results of the survey are shown below:

80 students like bike riding
20 students like bike riding but do not like skating
90 students like skating
40 students do not like bike riding

Make a two-way table to represent the data and use the table to answer the following questions.

Part A: What percentage of the total students surveyed like both bike riding and skating? Show your work. (5 points)

Part B: What is the probability that a student who does not like bike riding also does not like skating? Explain your answer. (5 points)

All I need is Part B

Answer 1

so as you can see there are 20 students who like bike riding but do not like skating. How many students are there in total?

Answer 2

Doesnt say

Answer 3

i- thought u said u didnt need help

Answer 4

then find it!

Answer 5

@TETSXPREME Earlier yes, that was only for the table though

Answer 6

@Florisalreadytaken there isnt a way because we dont know what students like or disliked how many things

Answer 7

hmm how did you answer to A ?

Answer 8

@AZ opinion please ? ty - i ve tried it but i ve not get the way - i think there are missed details ...

Answer 9

Have to make a table

80 students like bike riding
90 students like skating

Answer 10

20 students like bike riding but do not like skating
40 students do not like bike riding

Answer 11

So with all that information, we can find the rest of the empty boxes

Answer 12

OP said they only need help with Part B

`What is the probability that a student who does not like bike riding also does not like skating?`

so there's a total of 40 students who don't like bike riding

you need to find the value of this (I circled it) and your answer would be

x/ 40

Answer 13

To solve this table, you have to first solve for the box where I put an `a`

You just have to find a number that adds with 20 to get 60

After that you find `b` and then you can finally find the number in box `c` which is our `x`

Answer 14

so ty and from this result that the probability will be 1/4 ?

Answer 15

yes

Answer 16

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ
To solve this table, you have to first solve for the box where I put an `a`

You just have to find a number that adds with 20 to get 60

After that you find `b` and then you can finally find the number in box `c` which is our `x`
Created with RaphaëlTotalTotalLikes bike ridingDoesn't like bike ridingLikes skatingDoesn't like skatingTotalTotalLikes bike ridingDoesn't like bike ridingLikes skatingDoesn't like skatingTotalTotalLikes bike ridingDoesn't like bike ridingLikes skatingDoesn't like skatingReply Using Drawing
\(\color{#0cbb34}{\text{End of Quote}}\)
good job - like always - congrats !!!