contestada

7) A math teacher asked 60 randomly selected 7th graders whether they 10 pointsare left handed or right handed. The table below shows the results of thesurveyLeft or Right-Handed?Hand FrequencyLeftRight4218A school has a total of 280 seventh-grade students. Based on the resultsshown in the table above, how manyof those seventh-grade studentswould you expect to be left-handed?A 60B 72C 84D 120

7 A math teacher asked 60 randomly selected 7th graders whether they 10 pointsare left handed or right handed The table below shows the results of thesurveyLeft class=

Respuesta :

Answer:

C. 84

Explanation:

First, we will calculate the percentage of left-handed students in the group of 60 that the teacher asked.

So, the percentage is equal to:

[tex]\frac{18}{60}\times100\text{ \% = 30\%}[/tex]

Therefore, 30% of the randomly selected students are left-handed.

Now, we can use this percentage to estimate the number of left-handed students in the group of 280.

Then, 30% of 280 is equal to:

[tex]30\text{ \% }\times280=\frac{30}{100}\times280=84[/tex]

So, the answer is C. 84.