,u, =25!) and of =1.80 or =1.80 or =l.8[} Assume that for district 1 the overall sample mean is 233, the male sample mean is 23? and the female sample mean is 233. 1. {9 points 1 for each part] Following steps a through 1 below examine whether the mean for District 1 is statistically dierent from the population mean. a. State the null hypothesis using statistical notation (symbols) and words b. State the alternative hypothesis using statistical notation [symbols] and words c. What is le appropriate test to use in this case and why? d. What are the critical values of a two-tailed test at the H.135 level of significance? e. Compute the observed value of the test given the data