Chapter 11, Problem 1CA

To determine

To evaluate the statement.

Answer to Problem 1CA

The claim is true.

Explanation of Solution

Given information:

  

Friend’s claim is “greater percent of males in you grade have cell phone than females.”

Formula used:

Percentage is,

  $percentage=\frac{part}{whole}\times 100$

Calculation:

Total kids in class,

  $27+31+12+17$

On solving,

  $87$

Total male,

  $27+12$

On solving,

  $39$

Total female,

  $31+17$

On solving,

  $48$

For male percentage, substituting the value,

  $Mal{e}_p^{}=\frac{27}{39}\times 100$

On solving,

  $Mal{e}_p^{}=69.23$

Hence, percentage of males that have phone is 69.23%

For female percentage, substituting the value,

  $femal{e}_p^{}=\frac{31}{48}\times 100$

On solving,

  $femal{e}_p^{}=64.58$

Hence, percentage of females that have phone is 64.58%

Since, $69.23>64.58$

His claim is true, greater percent of males in you grade have cell phone than females.