00:01
Hello students, we are going to write here r is 1 0 1 6 adults, p is 54 percent.
00:08
We need to find our margin of error.
00:11
So, in the first case what would be our 80 percent sorry what would be our margin of error at 80 percent confidence interval.
00:22
So, margin of error must be z of alpha by 2 multiplied by under root of p cap q cap divided by n.
00:32
So, confidence interval is 80 percent.
00:37
We need to write here for this.
00:40
This must be written as 80 percent confidence interval with alpha value minus 0 .80.
00:52
So, 0 .20.
00:54
So, z of 0 .20 divided by 2 multiplied by under root of p cap 0 .1 0 .54 1 minus 0 .54 and this total value must be divided by 1 0 1 6.
01:15
So, z of 0 .10 must be 1 .282 multiplied by under root of 0 .54 multiplied by 0 .46 divided by 1 0 1 6.
01:31
This must be written as.
01:34
So, this must be 1 .282 multiplied by 0 .0156...