Question

Pick the correct answer

A-The key characteristic to distinguish between using a T test and a Z test is: Group of answer choices

i)whether the sample is normally distributed

ii)whether μ is known

iii)sample size

iv)whether σ is known

B- A sampling distribution of means is:

i)used for estimating a sample mean

ii)tends to be skewed

iii)sometimes based on different sized samples.

iv)used for estimating population means

C-Parameter is to population as statistic is to:

i)sampling

ii)inferential

iii)sample

iv) class name

D-

To reduce the margin of error, assuming you changed nothing else, you could:

i)increase confidence level

ii)reduce sample size

iii)increase confidence interval

iv)increase sample size

Answer 1

Solution :

A)

A-The key characteristic to distinguish between using a T test and a Z test is:

i)whether the sample is normally distributed

B)

A sampling distribution of means is:

used for estimating population means

C)

-Parameter is to population as statistic is to

ii)inferential

D)

To reduce the margin of error, assuming you changed nothing else, you could:

iv)increase sample size