Answer Happy

The outside diameter of a manufactured part must be 1.3825 inches, according to customer specifications. The data shown representa random sample of ten parts. Use a 95% confidence interval to judge whether the part has been manufactured to specifications. This data came from normally distributed with no outliers 1.3821 1.3830 1.3823 1.3829 1.3830 1.3824 1.3829 1.3826 1.3825 13823 The Hypothesis Test: Ho:f = 1.3825 inches Hej +1.3825 inches The sample mean, i = (Round to four decimal places.) (Round to five The sample standard deviation, s - decimal places) The confidence interval is (Round to four decimal places) includes/ not includes) Since the confidence interval (do not the mean stated in the null hypothesis, we do) reject the null hypothesis