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Q8(10). A public transit company claims that the bus frequency of one route is 10mins. We randomly selected 8 waiting intervals, the sample mean is 10.5. Assume the waiting intervals is normal with variance o = 0.6. 1(5). Use the P-value method to test if the average waiting interval is longer than the public transit company's claim. Let significance level to be 0.01. 2(5). Follow the above hypothesis test, calculate the probability of type II error B(11)