Research Question: Is there any significant difference between birth weight of male and female?
If the sample size is less than 30, we can address the above research question by an independent sample t test. Since the samples be taken from two normal populations and if we want to test the means of two normal populations, we use independent sample t-test here. If the sample size of any of the sample is greater than 30, we use z-test.
One of the expected outcomes is "the group 1 mean score will be significantly greater than the group 2 mean score because the of the rejection of null hypothesis. We reject the null hypothesis if the calculated test statistic is greater than the t-tabled value.
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