Question

If this is a representative sample of the entire 450-student 7th grade, then how many students would have birthdays in February?

Answer 1

this answer is incorrect

Answer 2

`(a)\ Total = 75`

`(b)\ Students = 100`

Explanation:

Given

See attachment for complete question

Solving (a); Number of students represented.

To do this, we simply calculate the length of each bar and then sum them up.

So, we have:

`Jan = 16`

`Feb = 10`

`Mar = 18`

`Apr = 15`

`May = 5`

`Jun = 11`

So, the total is;

`Total = Jan + Feb + Mar + Apr + May + Jun`

`Total = 16 + 10 + 18 + 15 + 5 +11`

`Total = 75`

Solving (b): Prediction of February students out of a total of 750.

To do this, we use:

`Students = (Month)/(Total) * 750`

For February, we have:

`Students = (Feb)/(Total) * 750`

`Students = (10)/(75) * 750`

`Students = (10 * 750)/(75)`

`Students = (7500)/(75)`

`Students = 100`