Question
True or False. Justify answers. If the variance of a data set is zero, then all the observations in this data set are zero. If
True or False. Justify answers.
If the variance of a data set is zero, then all the observations in this data set are zero.
If P9A) = 0.4, P(B)=5 and A and B are disjoint, the P(A and B) = 0.9
Assume X follows a continuous distribution which is symmetric about 0. If P(X >2) = 0.3, then P (X<-3) less than or equal to 3.
A 95% confidence interval is wider than 90% confidence interval of the same parameter.
In a right tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student's t-distribution with P (T<1.5)=0.96, then we fail to reject the null hypothesis is at 0.05 level of significance.
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