A machine that produces ball bearings is set so that the average diameter is 0.53 inch. A sample of 10 ball bearings was measured with results shown below. 0.55 0. 49 0. 49 0.53 0.49 0.53 0.49 0.56 0.58 0.54 Assuming that the standard deviation is 0.05 inch, can we conclude at the 6% significance level that the mean diameter is different from 0.53 inch? a) State the null and alternate hypothesis. b) State the test statistics. c) State the p-value. d) What is your decision? e) Write a conclusion.
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