SOC 282 Lecture Notes - Null Hypothesis, Type I And Type Ii Errors, Standard Deviation
Document Summary
H1= > 2: we don"t know the population standard deviation so we need to use a t-test. Critical value for a one tailed test with an alpha level of 0. 05 is 1. 65. Critical value for a two tailed test with an alpha level of 0. 05 is 1. 96. One tailed: mean housework time of british women is significantly greater than british men"s: h0= 1 2, h1= 1 > 2. 37-23/1. 09 = 12. 8 (t score: degrees of freedom = 1950, we reject the null hypothesis for both one tailed and two tailed test because the t score is far greater than both critical values. Mean housework time for british women is significantly different than. We reject the null hypothesis that the average age is not significantly different from the average age in 1970 so we accept our research hypothesis. We failed to reject the null hypothesis so the results show that tv watching hours is not significantly different than that of women"s.
