Question

My intended future career is to be a nurse. Give an example of a mean that applies to two populations for which you would like to do a hypothesis test in nursing. In this hypothesis test you will be testing the difference between these two population means when the two samples are independent. Your discussion must include the two target populations along with the population characteristic that you’re mean is computed for and the unit that is used when taking the sample measurements. As shown in the text your null and alternative hypothesis must include a symbol for each of the two population means along with the relational operator that describes the difference being tested between these two parameters as stated in your discussion.

Answer 1

Consider two different varieties of food habits A and B. We are interested in knowing whether there is any cause of these food habits on the sugar level of the person. Here A and B are two populations. The mean of Population A is and mean of Population B is . The hypothesis here is to check whether there is any significant difference in the mean of the two populations A and B. The null-hypothesis states that there is no significant difference between the mean blood sugar level of population A and B. The alternative-hypothesis states that there is a significant difference between the mean blood sugar level of population A and B. This can be shown symbolically as  

The unit of blood sugar level is millimoles. Hence   both have the same units of measurement which is millimoles.

are population parameters, which speaks about the mean of the two different population. We can use two-sample t-test to analyze this by taking samples from each population A and B.