fast please A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is: Group of answer choices N(12, 2.4) N(12, 12) Exp(1/12)
fast please A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is: Group of answer choices N(12, 2.4) N(12, 12) Exp(1/12)
fast please A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is: Group of answer choices N(12, 2.4) N(12, 12) Exp(1/12)
A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is:
Group of answer choices
N(12, 2.4)
N(12, 12)
Exp(1/12)
Exp(12)
Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.
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