00:01
Hello students in this question the data regarding girls and boys sexting are given.
00:07
So for boys n1 is 2231 and x1 is 183.
00:16
So the sample proportion is x1 divided by n1.
00:20
So that is 183 divided by 2231.
00:29
So that is equal to 0 .0820.
00:34
And next for girls we have n2 2169 and x2 is 156.
00:43
So p2 cap that is 156 divided by 2169.
00:52
156 divided by 2169.
01:00
So that is equal to 0 .0719.
01:05
So here null and alternative hypothesis h0 pb is equal to pg versus ha pb is greater than pg.
01:19
And next to determine the test statistic the formula is z is equal to p1 cap minus p2 cap divided by square root of p into 1 minus p into 1 by n1 plus 1 by n2.
01:37
So first we need to find p that is x1 plus x2 divided by n1 plus n2.
01:47
So now substituting the values here 183 plus 156 divided by 2231 plus 2169...