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3 coins are tossed simultaneously 200 tmes with the following frequencies of different outcomes :  OUTCOME: 3 heads   2 heads   1 head  3tails FREQUENCY: 24  70 75  31   compute the  probability of getting (i) less than 2 heads  (ii) 3 heads

Asked by nisha_vini29 6th June 2016, 2:31 PM
Answered by Expert
Answer:

begin mathsize 16px style O u t c o m e space space space space space space space space space space F r e q u e n c y
3 space h e a d s space space space space space space space space space space space space space space space space space space space 24
2 space h e a d s space space space space space space space space space space space space space space space space space space space 70
1 space h e a d space space space space space space space space space space space space space space space space space space space space space 75
3 space t a i l s space space space space space space space space space space space space space space space space space space space space space space space 31

left parenthesis i right parenthesis space P left parenthesis l e s s space t h a n space 2 space h e a d s right parenthesis equals P left parenthesis 1 space h e a d right parenthesis plus P left parenthesis n o space h e a d right parenthesis equals 75 over 200 plus 31 over 200 equals 106 over 200 equals 53 over 100

left parenthesis i i right parenthesis space P left parenthesis 3 space h e a d s right parenthesis equals 24 over 200 equals 3 over 25 end style

Answered by Expert 6th June 2016, 6:02 PM
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