The following table provides a frequency distribution for the number of rooms in this​ country's housing units. The frequencies are in thousands.   Rooms No. of units 1 527   2 1,439   3 10,988   4 23,331   5 27,945   6 24,601   7 14,655   8+ 17,206       A housing unit is selected at random. Find the following probabilities.   a. Find the probability that the housing unit obtained has four rooms.   The probability is ____________. ​(Round to three decimal places as​ needed.)   b. Find the probability that the housing unit obtained has more than four rooms.   The probability is ____________. ​(Round to three decimal places as​ needed.)   c. Find the probability that the housing unit obtained has one or two rooms.   The probability is ___________. ​(Round to three decimal places as​ needed.)

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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The following table provides a frequency distribution for the number of rooms in this​ country's housing units. The frequencies are in thousands.
 
Rooms
No. of units
1
527
 
2
1,439
 
3
10,988
 
4
23,331
 
5
27,945
 
6
24,601
 
7
14,655
 
8+
17,206
 
 
 
A housing unit is selected at random. Find the following probabilities.
 
a. Find the probability that the housing unit obtained has four rooms.
 
The probability is ____________.
​(Round to three decimal places as​ needed.)
 
b. Find the probability that the housing unit obtained has more than four rooms.
 
The probability is ____________.
​(Round to three decimal places as​ needed.)
 
c. Find the probability that the housing unit obtained has one or two rooms.
 
The probability is ___________.
​(Round to three decimal places as​ needed.)
 
d. Find the probability that the housing unit obtained has fewer than one room.
 
The probability is ___________.
​(Round to three decimal places as​ needed.)
 
e. Find the probability that the housing unit obtained has one or more rooms.
 
The probability is __________.
​(Round to three decimal places as​ needed.)
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