Answer:




Step-by-step explanation:
Given: The above data
Solving (a): Mean of each group
Mean is calculated as:




Solving (b): The sample size of each group
This is the number of rows in each group.
Hence:

Solving (c): Standard deviation (s)
This is calculated as:

So, we have:




Solving (d): Square root of n


Solving (e): SEM
This is calculated as:




Answer:
c its c
Step-by-step explanation:
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Answer:
C)38 or B)23, or D)45
Step-by-step explanation:
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