Question

If a coin is flipped 20 times and a head comes up 9 times, what is the relative frequency of a head coming up?

a.0.50
b.0.45
c.0.35
d.0.40

Answer 1

`\sf Hello!`

•
`\sf Number\: of \:times \:head \:came\: up = 9`
•
`\sf Number \:of \:times \:coin \:is \:flipped = 20`


`\sf Relative\: frequency\: of \:head \:coming \:up` :

=
`(\sf 9)/(\sf 20) × \sf 100` %

=
`\sf 9 × 5`

=
`\sf 45` %

=
`(\sf 45)/(\sf 100)`

=
`\sf 0.45`


`\sf Hence,`

`\sf Realtive\: frequency\: of\: head \:coming\: up\: is \:B.\:0.45`

~
`\sf iCarl`