An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 5555 type K batteries and a sample of 7272 type Q batteries. The type K batteries have a mean voltage of 9.119.11, and the population standard deviation is known to be 0.6480.648. The type Q batteries have a mean voltage of 9.439.43, and the population standard deviation is known to be 0.2710.271. Conduct a hypothesis test for the conjecture that the mean voltage for these two types of batteries is different. Let μ1μ1 be the true mean voltage for type K batteries and μ2μ2 be the true mean voltage for type Q batteries. Use a 0.10.1 level of significance.
Step 5 of 5:
State the conclusion of the hypothesis test.
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