00:01
Hello students, the question that is given over here is says that a simple random sample of size n is equal to 785 adults when asked if they follow college football.
00:19
On 785 survey, 2 75 respondents that they did follow college football.
00:27
The number of adults who followed college football is 275.
00:31
So we have to find out at 95 percentage confidence level for the population proportion of items who follow the college football.
00:47
So the total number of respondents, n is equal to 785.
00:53
So the number of respondents who responded that they did follow college football, p is equal to 275 divided by 785.
01:05
So this is equal to 0 .35.
01:13
So in the first step what we are going to do is we are going to find out the critical value.
01:22
So the critical probability is equal to 1 minus alpha divided by 2 which is 0 .975.
01:30
So the critical value for the cumulative probability from the z table so it is 1 .96...