Test the claim about the population mean, mu, at the given level of significance using the given sample statistics. Claim: munot equals6000; alphaequals0.03; sigmaequals323. Sample statistics: x overbarequals6400, nequals49 Question content area bottom Part 1 Identify the null and alternative hypotheses. Choose the correct answer below. A. Upper H 0: muequals6000 Upper H Subscript a: munot equals6000 Your answer is correct.B. Upper H 0: muless than or equals6000 Upper H Subscript a: munot equals6000 C. Upper H 0: munot equals6000 Upper H Subscript a: muless than or equals6000 D. Upper H 0: mugreater than or equals6000 Upper H Subscript a: munot equals6000 E. Upper H 0: munot equals6000 Upper H Subscript a: muequals6000 F. Upper H 0: munot equals6000 Upper H Subscript a: mugreater than or equals6000 Part 2 Calculate the standardized test statistic. The standardized test statistic is 8.67. (Round to two decimal places as needed.) Part 3 Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.)