00:01
Hello, we have to solve the following problem.
00:03
Let's start from question 1, which says that the mean of the normal distribution is 300 and the standard deviation is 5.
00:19
First in question a, we have to find probability that x is less than 315.
00:30
That is equal to the following.
00:31
That's probability that that score is less than 315 minus 335, which is same as probability of that being less than.
00:48
Let's now find this value.
01:05
Now, let's move on to question b.
01:11
We have to find probability that x is between 309 and 295.
01:21
Let's find this to that score.
02:11
Now, let's find this probability.
02:19
Now, let's move on to question c...