True or False. Justify.(a) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.2.(b) If…

True or False. Justify.(a) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.2.(b) If all the observations in a data set are identical, then the variance for this data set is 0.(c) The mean is always equal to the median for a normal distribution.(d) Itâs easier to reject the null hypothesis at significance level of 0.01 than at significance level of 0.05.(e) In a two-tailed test, the value of the test statistic is 2. If we know the test statistic follows a Studentâs t-distribution with P(T >2) = 0.03, then we have sufficient evidence to reject the null hypothesis at 0.05 level of significance.

The post f P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint

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