use the t-distribution and the sample results to complete the test of the hypotheses. Use a 5% significant level. Assume the results come from a random sample, and if the sample  size is small, assume the underlying distribution is relatively normal.                                                                                                                                  Test  Ho:  µ=20 vs Ho: µ ≠ 20 using the sample results 1 = 15.3, s = 7.7, with n = 15.                                                                                                                                                                                                                                                                                                                                                                                   GIVE THE TEST  STATISTIC :                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  WITH A CRITICAL VALUE OF 2.145, DETERMINE A CONCLUSION AND INTERPRET.

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