QUESTION 1 (DECEMBER 2019) A researcher wants to determine whether there is significant difference in the Body Mass Index (BMI) between male and female. A survey was conducted on 80 patients at Tawakal Health Centre. The collected data analyzed using SPSS. The partial output indicated in the following table. Group Statistics Gender N Mean Std. Deviation Std. Error Mean Male 40 27.0375 4.41911 69872 BMI Female 40 24.0175 4.00031 .63251 a) Show the standard error difference is 0.9425. (3 marks) b) State the null and alternative hypotheses for the above study. (2 marks) c) Given the z-statistic is 3.205, do the data provide sufficient evidence to indicate there is significant difference in the Body Mass Index (BMI) between male and female? Use a = 0.05