a) getting all tails? 0.0002 b) getting all heads? 0.0002 c) getting at least one tails? 0.9998

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2.5 Coin Flips: If you flip a fair coin 12 times, what is the probability of each of the following?
(please round all answers to 4 decimal places)
a) getting all tails?
0.0002
b) getting all heads?
0.0002
c) getting at least one tails?
0.9998
a Calculator
Check All Parts
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71
MacBookf
Transcribed Image Text:2.5 Coin Flips: If you flip a fair coin 12 times, what is the probability of each of the following? (please round all answers to 4 decimal places) a) getting all tails? 0.0002 b) getting all heads? 0.0002 c) getting at least one tails? 0.9998 a Calculator Check All Parts ttv 71 MacBookf
Expert Solution
Step 1

Let , you flip a coin 12 times.

Let , X be the number of tails 

Here , X→B(n=12 , p=0.5)

The probability mass function of X is , 

P(X=x)=nxpxqn-x ; x=0,1,2,.......,n and q=1-p

= 0 ; otherwise

Our aim is to find the following : 

a) P(getting all tails)

b) P(getting all heads)

c) P(getting at least one tails)

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