Q60:
A fair die is tossed 360 times. The probability that a six comes up on 70 or more of the tosses is?
Answer C: between 0.02 and 0.16.
Anyone knows the trick here without using calculator?
Thanks
8767: Q60

 Posts: 34
 Joined: Thu Dec 30, 2010 4:36 am
Re: 8767: Q60
The involved distribution is the Bernoulli trial, with the following data :
n=360
k=1/6
For large n, use normal distribution to estimate it with :
µ = np
σ^2 = npq
Then use Chebyshev inequality for find an estimate of the engaged probability.
n=360
k=1/6
For large n, use normal distribution to estimate it with :
µ = np
σ^2 = npq
Then use Chebyshev inequality for find an estimate of the engaged probability.