Hypothesis Test for a Population Mean (o is Unknown) You wish to test the following claim (H) at a significance level of a = 0.05. Hou = 53.5 He:u # 53.5 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 59 with mean M = 55.3 and a standard deviation of SD = 7.2. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = Show The Testing Claims You wish to test the following claim (H) at a significance level of a = 0.01. H.:p = 0.76 H:p < 0.76 You obtain a sample of size n = 550 in which there are 393 successful observations. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to three decimal places.) p-value =