Question 17 The mean age of graduate students at a University is at most 28 years with a standard deviation of two years. A random sample of 20 graduate students is taken. The sample mean is 28 years and the sample standard deviation is three years. Are the data signicant at the 5% level? The p-value is 0.0264. State the null and alternative hypotheses and interpret the p-value. Interpret: Edit Format Table ' 12pt v Paragraph v B I L_J A v i u T2 x ,5