Question

An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 32 type K batteries and a sample of 31 type Q batteries. The type K batteries have a mean voltage of 9.48, and the population standard deviation is known to be 0.293. The type Q batteries have a mean voltage of 9.85, and the population standard deviation is known to be 0.571. Conduct a hypothesis test for the conjecture that the mean voltage for these two types of batteries is different. Let μ1 be the true mean voltage for type K batteries and μ2 be the true mean voltage for type Q batteries. Use a 0.05 level of significance. Step 3 of 5 : Find the p-value associated with the test statistic. Round your answer to four decimal places.

Answer 1