A random sample of 18 eighth grade? students' scores on a national mathematics assessment test has a mean score of 269. This test result prompts a state school administrator to declare that the mean score for the? state's eighth graders on this exam is more than 260. Assume that the population standard deviation is 36. At α = 0.06?, is there enough evidence to support the? administrator's claim? Complete parts? (a) through? (e).
a) Write the claim mathematically and identify H0 and Ha.