00:01
Hi, i'm david and i'm here to hear me and see the question.
00:03
Now let me bring up your question here.
00:06
In the question here we are going to discuss about the binomial distribution.
00:12
Let me remind you that if the x that followed by the binomial with the n and the p and then the probability that x equal to k, equal to n choose k, p power k times 1 minus p, power n minus k.
00:27
In the question here, the probability that the version light has useful life of under 700 hours b equals 2.
00:37
Then we go back here, it would be 0 .6.
00:40
Now we have the symbol and equal to the 17 light.
00:45
Now if we call the x equal to the number of the light, whose lifetime will be quitted under 700 hours.
00:55
Then we'll ever follow by the binomial when the n equals to the 17 p equal to the 716...