00:01
Hello everyone.
00:02
So in the question we have given the value of l1 equals to 13.
00:05
Now this is the mean delta value is given 0 .6.
00:14
This is standard deviation and a condition is given where k is greater than 1.
00:26
So we have to find in the question that what is the probability of number between 8 .5 to 17 .5.
00:46
So here it is given that the inequality constant 1 minus 1 divided by k square say this is equation 1.
01:03
So we can write k is equals to x minus l1 divide by sigma.
01:11
Substituting the values we get 11 minus 13 divide by 0 minus 6.
01:18
This is 0 .6 because l1 is given 13.
01:28
Sigma is given 0 .6 x is given 11 substituted the values we get answer minus of 3 .3333 this is the value of inequality that is k now we have taken here we will write that if we take x equals to 15 then what will happen k is equals to 15 minus 13 divide by 0 .6 so we get 3 .3333.
02:08
So this is by by shapes inequality.
02:25
The probability that the outcome lie between is equals to 1 minus 1 divide by k square multiplied with 100 which is equals to 1 minus 1 divide by 3 .33332 square.
03:01
Multiplied with 100.
03:03
So we get 3 .33332 square minus 1 divide by 3 .3333 square multiplied with 100...