Suppose the distribution of the daily calcium intake of Americans is left skewed with a mean of 800 mg and a standard deviation
1 answer:
Answer:
Central limit theorem
Step-by-step explanation:
By central limit theorem. The sampling distribution will have the same mean as the original distribution.
The sampling distribution will have a standard deviation of , so it cannot be a fixed 16. Also,the normal approximation improves with increasing sample size.
Therefore, the correct answer about the sampling distribution of distribution X
is central limit theorem.
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Answer:
Option C.
Step-by-step explanation:
It is given that the dilation rule is . It means the center of dilatation is point Q and scale factor is 2.5.
Scale factor is the ratio of distance from center to the image of a point and distance from center to the corresponding point.
It is given that QU=4 and scale factor = 2.5.
Multiply both sides by 4.
We know that
The distance between U' and U is 6 units.
Therefore, the correct option is C.