Exercise 9-39 Algo Consider the following hypotheses: HO: H = 10 HA: H = 10 The population is normally distributed. A sample produces the following observations: (You may find it useful to reference the appropriate table: z table or t table) 9 15 7 12 9 7 14 Click here for the Excel Data File a. Find the mean and the standard deviation. (Round your answers to 2 decimal places.) Mean Standard deviation b. Calculate the value of the test statistic. (Round final answer to 2 decimal places.) Test statisticStandard deviation b. Calculate the value of the test statistic. (Round final answer to 2 decimal places.) Test statistic c. Find the p-value. Op-value 2 0.10 0.05 7 p-value