00:01
So, in this question given that this the left side left tailed test.
00:16
So, this is given.
00:17
So, we can write the null and alternative hypothesis.
00:34
So, it will be h0 such that p is greater than or equal to 0 .90.
00:43
So, now we write like this h a such that p is less than 0 .90 given n equals to 600.
00:58
So, we write value of p is 89 percent.
01:06
So, it will be 0 .89 and value of p0 equals to 0 .90.
01:14
So, now we will find 1 minus p0.
01:17
So, simply subtract 1 minus 0 .90.
01:25
Now apply the formula z equals to p minus p0 upon p0 into 1 minus p0 upon n and it will under square root.
01:45
Now put the values...