QUESTION 5 Students in Class A wants to evaluate their weight loss after fasting month of Ramadhan. They collect data of their weights before and after Ramadhan to see whether they managed to lose weights. Data collected was analyzed using SPSS and the output are shown as below. Paired Samples Statistics Sid. Error Mean N Sid. Deviation Mean Students' Before Ramadhan 68.75 20 14.216 3.179 Weight After Ramadhan 68.05 20 14.292 3.196 Paired Samples Test Paired Differences Sig. (2- Std. Std. Error Mean tailed) Deviation Mean Students' Before - After Weight Ramadhan 0.70 2.408 0.539 1.300 Z 0.209 a) Compute the value of Z. (1 mark) b) Construct a 99% confidence interval for the mean difference of students' weight. (3 marks) c) Based on the values obtained in b), can it be concluded that there is a significant difference on the students' weight before and after Ramadhan? Give a reason to support your answer. (1 mark)