A dartboard has  5  equally sized slices numbered from  1  to  5 .Some are grey and some are white.The slices numbered  2 ,  3 , and  4  are grey.The slices numbered  1  and  5  are white.   A dart is tossed and lands on a slice at random.Let  X  be the event that the dart lands on a grey slice, and let  PX  be the probability of  X .   Let not  X  be the event that the dart lands on a slice that is not grey, and let  P not  X  be the probability of not  X .     (a)For each event in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event.   Event Outcomes Probability 1 2 3 4 5 X                     =PX not  X                     =PnotX         (b)Subtract.   =−1PX         (c)Select the answer that makes the sentence true.   −1PX  is the same as ▼(Choose one).

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Question
A dartboard has 
5
 equally sized slices numbered from 
1
 to 
5
.
Some are grey and some are white.
The slices numbered 
2
3
, and 
4
 are grey.
The slices numbered 
1
 and 
5
 are white.

 

A dart is tossed and lands on a slice at random.
Let 
X
 be the event that the dart lands on a grey slice, and let 
PX
 be the probability of 
X
.

 

Let not 
X
 be the event that the dart lands on a slice that is not grey, and let 
P
not
 X
 be the probability of not 
X
.
 

 

(a)For each event in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event.

 

Event Outcomes Probability
1
2
3
4
5
X
 
 
 
 
 
 
 
 
 
 
=PX
not
 X
 
 
 
 
 
 
 
 
 
 
=PnotX
 
 
 

 

(b)Subtract.

 

=−1PX
 
 
 

 

(c)Select the answer that makes the sentence true.

 

−1PX
 is the same as ▼(Choose one).
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