Answer:
x=0
Step-by-step explanation:
4/8=1/2, so:
x+1/2=1/2
x=0
Class 2 scored better on average
<h3>How to determine which class scored better on average?</h3>
The averages and the standard deviations are given as:
Class 1
Mean score = 7.8
Standard deviation = 1
Class 2
Mean score = 8.1
Standard deviation = 0.2
As a general rule, the smaller the standard deviation; the better the average
Class 2 has a smaller deviation
Hence, class 2 scored better on average
Read more about standard deviation at:
brainly.com/question/28061243
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Answer:
x=11
Step-by-step explanation:
Answer:
it is 4.2 n
Step-by-step explanation:
because you have to divide 525/125=4.2
