Step-by-step explanation:



Answer:
z=4
Step-by-step explanation:
1/4z-2/7=5/7
1/4z= 5/7+2/7
1/4z=1
z=4
Z = (x - m)/s
z = (38-40)/8
z = -2/8
z = -1/4
z = -0.25
The z score is -0.25
Answer:mean
Step-by-step explanation: I am also not sure because I been looking for the anwser to this but I think it’s mean
Answer:
Hey there the answer to your question will be below
Step-by-step explanation:
Mean=20
Range=29
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Range:
Xmas = 39 and Xmas = 10
39-10=29
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Mean:
160/8 = 20
Hope that helps!
By: xBrainly