The sampling distribution of differences between means approximates a normal cure whose __________ is zero.

Question

The sampling distribution of differences between means approximates a normal cure whose _________. true or false

Answer 1

The sampling distribution of differences between means approximates a normal cure whose mean is zero

Answer 2

The sampling distribution of differences between means approximates a normal cure whose mean is zero

Answer 3

The sampling distribution of differences between means approximates a normal curve distribution whose mean is zero

Answer 4

standard normal distribution, mean is zero, and standard deviation is one

however, you test the sample for differences of two means... if zero, then the means are equal

Null Hypothesis: mean1 - mean2 = 0

Alternate Hypothesis: the means are different