SOLUTION: )
The table below shows the numbers of two- to five-bedroom houses in the Belmont neighborhood.
Number of Bedrooms Frequency
2 12
3 4
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Probability-and-statistics
-> SOLUTION: )
The table below shows the numbers of two- to five-bedroom houses in the Belmont neighborhood.
Number of Bedrooms Frequency
2 12
3 4
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The table below shows the numbers of two- to five-bedroom houses in the Belmont neighborhood.
Number of Bedrooms Frequency
2 12
3 40
4 70
5 3
What is the probability that a randomly selected house will have 3 or fewer bedrooms?
"3 or fewer" means "at most 3" (think of it as the ceiling or as high as you can go). X = 2 is the lowest you can go on the table while X = 3 is the highest we want. So we just need to calculate P(X = 2) and P(X = 3) then add up them. The variable X is defined as X = number of bedrooms.
From the table, we get the following probabilities
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