Please answer this question

Problem 1: 20 points = [5 + 5 + 5 + 5] A group of n = 36 engineers was selected for the study of their IQ scores. Researchers assume that individual records are normally distributed with the population standard deviation o = 15. Sample based summaries were found as Sample Mean = X =104 and Sample SD = s = 18. At significance level a = 10%, is there sufficient evidence that the population mean exceeds /o = 100? 1. Show the critical value you are using 2. Evaluate test statistic 3. State rejection rule, that is when the null hypothesis is rejected under specified significance level 4. Finally, what is your decision: yes, enough evidence - or not enough