A hypothesis is set up to test if a population mean is significantly different to 28.9. Suppose 54 adults are selected at random from the population. The sample mean = 26.0 and standard deviation = 11.3. Compute the value of test statistic to two decimal places. Note: due to rounding error in your calculations your answer may slightly differ to the stated options. A. -1.89 B. 1.89 C. 0.26 D. -0.26.