Consider independent random samples from two normally distributed populations.The first population has a mean of μ_x and a variance of and we obtain a random sample of size n_x.The second population has a mean of μ_y and a variance of
And we obtain a random sample of size n_y.The sample means are denoted by
And
) Which of the following formulae calculates the random variable,Z?

Question

Consider independent random samples from two normally distributed populations.The first population has a mean of μ_x and a variance of

Consider independent random samples from two normally distributed populations.The first population has a mean of μ<sub>x</sub> and a variance of and we obtain a random sample of size n<sub>x</sub>.The second population has a mean of μ<sub>y</sub> and a variance of And we obtain a random sample of size n<sub>y</sub>.The sample means are denoted by And ) Which of the following formulae calculates the random variable,Z? A) Z = B) Z = C) Z = D) Z =

and we obtain a random sample of size n_x.The second population has a mean of μ_y and a variance of

And we obtain a random sample of size n_y.The sample means are denoted by

And

) Which of the following formulae calculates the random variable,Z?

Quizplus · Accepted Answer

The Answer of Consider independent random samples from two normally distributed populations.The first population has a mean of μ_x and a variance of and we obtain a random sample of size n_x.The second population has a mean of μ_y and a variance of And we obtain a random sample of size n_y.The sample means are denoted by And )Which of the following formulae calculates the random variable,Z?

Consider Independent Random Samples from Two Normally Distributed Populations