Question

Elementary and secondary schools were classified by the number of computers they had.

Answer 1

Answer:

$Probability = 0.7259$

$Probability = 0.2741$

$Probability = 0.4414$

Step-by-step explanation:

Given

The table

First, we calculate the amount of schools

$Total = 752 + 3352 + 18865 + 14016 + 46805$

$Total = 83790$

Solving (a): Probability of 75+ computers.

From the given table, schools with 75 or more computers have the population of:

$75\ or\ more = 14016 + 46805$

$75\ or\ more = 60821$

The probability is calculated as:

$Probability = \frac{75\ or\ more}{Total}$

$Probability = \frac{60821}{83790}$

$Probability = 0.7259$

Solving (b): Probability of less than 75 computers.

From the given table, schools with less than 75 computers have the population of:

$Less\ than\ 75 = 752 + 3352 +18865$

$Less\ than\ 75 = 22969$

The probability is calculated as:

$Probability = \frac{Less\ than\ 75}{Total}$

$Probability = \frac{22969}{83790}$

$Probability = 0.2741$

Solving (c): Probability of less than 10 computers.

From the given table, schools with less than 100 computers have the population of:

$Less\ than\ 100 = 752 + 3352 +18865+14016$

$Less\ than\ 100 = 36985$

The probability is calculated as:

$Probability = \frac{Less\ than\ 100}{Total}$

$Probability = \frac{36985}{83790}$

$Probability = 0.4414$