Answer:
z-score for 900 points = -4
Step-by-step explanation:
To find the z scores
z=(x-mean)/standard deviation
so
z=(900-1500)/150
z= -600/150
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Step-by-step explanation:
Answer:Y-4
Step-by-step explanation:feufubfbhj
Answer:
x=7/4
Step-by-step explanation:
4x=-7=4x/-4=-7/-4= x=7/4