Engineering Board Exam Reviewer · Binomial Distribution · hard
A fair coin is tossed 10 times. What is the probability that the number of heads is between 4 and 6 inclusive?
- 63/256
- 105/512
- 21/32
- 3/4
Answer
C. 21/32
Solution
P= 104+ 105+ 106210=210+252+210/1024=672/1024=21/32.
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