Auto batterles have an average life of 3.0 years. Battery life is normally distrlbuted with a mean of 3.0 years and a standard deviation of 0.39 years. The batterles are warranted to operate for a minlmum of 2 years. If a battery falls within the warranty perlod, It will be replaced with a new battery at no charge. The company sells and installs the batterles. Also, the usual \$7 Installation charge will be walved. Use and Table B. a. What percentage of batterles would you expect to fall before the warranty perlod expires? (Round your z value to 2 decimal places. Round probabilities to 4 decimal places. Round your final answer to 2 declmal places.) Answer is complete but not entirely correct. b. A competitor is offering a warranty of 28 months on Its premlum battery. The manager of this company is toylng with the Idea of using the same battery with a different exterlor, labeling it as a premlum battery, and offering a 28 -month warranty on It. What percentage of the batterles would you expect to fall before this new warranty perlod expires? (Round your z value to 2 declmal places. Round probabllitles to 4 decimal places. Round your final answer to 2 decimal places.) Answer is complete but not entirely correct