Answer: C - Only the fifth-grade data points are distributed fairly evenly.
Step-by-step explanation: Just took the test and that is the right anwser.
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Answer:
The standard deviation for the sample mean distribution=0.603
Step-by-step explanation:
We are given that
Mean,
Standard deviation,
n=44
We have to find the standard deviation for the sample mean distribution using Central Limit Theorem for Means.
Standard deviation for the sample mean distribution

Using the formula





Hence, the standard deviation for the sample mean distribution=0.603
It should be negative one (-1)