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11 A normal population has a known mean of 50 and unknown variance. A random sample is selected from this population, and the sample results are as follows: sample mean is 52, and sample standard deviation is 8. If the sample size is 30, then the P-value (the smallest level of significance that would lead to rejection of the null hypothesis) is: (2 Points) O 0.00135 O 0.00621 0.05043 0.07322 0.08584 0.09240 None of the mentioned answers