A manufacturer states that the average life of its television is 5 years. You were hired as a quality control specialist. You obtained a random sample of 40 televisions and calculated the average life to be 4 years and 10 months. The population standard deviation is equal to 4 months. Test whether the manufacturers claim is correct at the 5 percent level. 11. State the Claim and Opp Claim: 12. State the Null and Alternative Hypothesis 13. Test the Claim by calculating the appropriate test statistic (Z or T formula) 14. Can you prove the claim?

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