00:01
Hello, schwenz, we need to write here 8 % of people in certain geographic region are unemployed, find the probability that in a sample of 200 people, there are fewer than 10 people who are employed.
00:12
We need to write here.
00:13
So if i write here for this, n value is 200, which is the sample of 200 people.
00:20
If i write here for this, probability of success is 8%, which is 0 .08.
00:25
And if i write here for this, this will come out as probability of unsuccessful is 1%.
00:31
1 minus p.
00:32
This is 1 minus 0 .08 which is 0 .92.
00:36
Now we need to calculate our mean.
00:38
This is basically mean value is n multiplied by p.
00:42
If i write here n multiplied by p 200 multiplied by 0 .08 this will come out as 16 and we all know standard deviation can be calculated as en route of npq.
00:54
N pq.
00:55
If i write here for this this is 200 multiplied by 0 .08 multiplied by 0 .0 .9...