Answer:
[tex]Probability = 0.7259[/tex]
[tex]Probability = 0.2741[/tex]
[tex]Probability = 0.4414[/tex]
Step-by-step explanation:
Given
The table
First, we calculate the amount of schools
[tex]Total = 752 + 3352 + 18865 + 14016 + 46805[/tex]
[tex]Total = 83790[/tex]
Solving (a): Probability of 75+ computers.
From the given table, schools with 75 or more computers have the population of:
[tex]75\ or\ more = 14016 + 46805[/tex]
[tex]75\ or\ more = 60821[/tex]
The probability is calculated as:
[tex]Probability = \frac{75\ or\ more}{Total}[/tex]
[tex]Probability = \frac{60821}{83790}[/tex]
[tex]Probability = 0.7259[/tex]
Solving (b): Probability of less than 75 computers.
From the given table, schools with less than 75 computers have the population of:
[tex]Less\ than\ 75 = 752 + 3352 +18865[/tex]
[tex]Less\ than\ 75 = 22969[/tex]
The probability is calculated as:
[tex]Probability = \frac{Less\ than\ 75}{Total}[/tex]
[tex]Probability = \frac{22969}{83790}[/tex]
[tex]Probability = 0.2741[/tex]
Solving (c): Probability of less than 10 computers.
From the given table, schools with less than 100 computers have the population of:
[tex]Less\ than\ 100 = 752 + 3352 +18865+14016[/tex]
[tex]Less\ than\ 100 = 36985[/tex]
The probability is calculated as:
[tex]Probability = \frac{Less\ than\ 100}{Total}[/tex]
[tex]Probability = \frac{36985}{83790}[/tex]
[tex]Probability = 0.4414[/tex]
