SOLUTION: It is known that 28% of American adults claim to be able to play a musical instrument. If twelve American adults are selected at random, what is the probability that MORE than hal
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Question 363021: It is known that 28% of American adults claim to be able to play a musical instrument. If twelve American adults are selected at random, what is the probability that MORE than half of them DO NOT play an instrument? Would you be willing to assit with this please? I have an answer of .2254 and wasn't sure if it was correct.
You can put this solution on YOUR website! ****It is known that 28% of American adults claim to be able to play a musical instrument. If twelve American adults are selected at random, what is the probability that MORE than half of them DO NOT play an instrument? Would you be willing to assit with this please? I have an answer of .2254 and wasn't sure if it was correct.****
0.28 = prob'y that an American adult plays an instrument,
0.72 = prob'y that an American adult DOES NOT play an instrument. Then
the probability that MORE than half of them DO NOT play an instrument {7,8,9,10,11,12}
= +...+
=0.1367234+0.219734+0.2511246+0.1937247+0.090573+0.01941
=0.9113
