A random sample of 84 eighth grade students' scores on a national mathematics assessment test has a mean score of 277. 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 275. Assume that the population standard deviation is 34. At alphaequals0.02, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). Question content area bottom Part 1 (a) Write the claim mathematically and identify Upper H 0 and Upper H Subscript a. Choose the correct answer below. A. Upper H 0: muless than275 Upper H Subscript a: mugreater than or equals275 (claim) B. Upper H 0: muequals275 (claim) Upper H Subscript a: mugreater than275 C. Upper H 0: muless than or equals275 Upper H Subscript a: mugreater than275 (claim) D. Upper H 0: muless than or equals275 (claim) Upper H Subscript a: mugreater than275 E. Upper H 0: mugreater than or equals275 (claim) Upper H Subscript a: muless than275 F. Upper H 0: muequals275 Upper H Subscript a: mugreater than275 (claim)