Answer:
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Step-by-step explanation:
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You can divide 1800 by 10 and times it by 4 giving a answer of 720
Answer: A. 12%
Step-by-step explanation:-
Given : In an exam , Mean score :
Standard deviation :
Let X be a random variable that represents the scores of students.
We assume that the points are normally distributed.
Z-score :
For x = 85, we have
Then using standard normal distribution table, the probability that the students received more than 85 is given by :-
Hence, the percentage of students received more than 85 =12%
<span>P (-0.24 < z < 0.67)
is equal to
P(z<0.67) - P(z<-0.24)
From Normal tables,
</span>P(z<0.67) - P(z<-0.24)
=P(z<0.67) - P(z<-0.24)
=0.7485711-0.4051651
=0.343406
Kerrie is incorrrect because the school system favors guys