A class’s test scores are normally distributed if the average score 60 and the standard deviation is 7 choose the spots where th
e students scoring below 46 and above 74 lie
2 answers:
Answer: Look at the picture below
Step-by-step explanation: I got this right on Edmentum
Answer:
46
Step-by-step explanation:
We are given that a class's test scores are normally distributed with an average score of 60.
We know that the curve of a normal distribution is symmetric about its mean.
60-14=46
60+14=74
Hence, the point 46 lies to the left of the mean and 74 lies to the right of the mean, and the two points have the same function value.
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Answer:
A
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
349 ---100%
x ------ 20%
x= (349×20)÷100
x=69.8
349-69.8=279.2
279.2 ---100%
x-----7%
x=(279.2×7)÷100
x=19.54
Final result
279.2+19.54=298.74
And final result is B
Answer:
P(X<1) = .216 P(X</=1) = .648
Step-by-step explanation:
its right
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8
Answer:
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Step-by-step explanation:
