The probability that a randomly selected apartment from this group has a monthly rental from $800 to under $900 or is located in york is 0.688 .
Given :
the probability that a randomly selected apartment from this group has a monthly rental from $800 to under $900 or is located in york is .
From the table :
Total number of selected apartments is,
n = 125
The number of selected apartments located in York,
y = 39
The number of selected apartments located in Lancaster,
l = 47
Probability p = 39 / 125 + 47 / 125
= 39 + 47 / 125
= 86 / 125
= 0.688
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Full question :
The following contingency table shows the number of two-bedroom apartments grouped by monthly rent and location.
Monthly Rent York Lancaster Dover Total
$600 to under $700 6 15 9 30
$700 to under $800 30 21 24 75
$800 to under $900 15 18 12 45
Total 51 54 45 150
What the probability that a randomly selected apartment from this group has a monthly rental from $800 to under $900 or is located in york is .
