The probability that a student scored less than 55% on the exam is 0.134%.
<h3>What is a normal distribution?</h3>
It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.
We have:
Mean of the sample = 70
Standard deviation = 5
= P(X<55%)
Z = (55-70)/5
Z = -3
P(X < -3)
From the Z table:
P(x<-3) = 0.0013499
or
P(x<-3) = 0.134%
Thus, the probability that a student scored less than 55% on the exam is 0.134%.
Learn more about the normal distribution here:
brainly.com/question/12421652
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Answer: 3 bottles of sunscreen- $22.5,
2 beach towels- $30
and 3 floats- $30.75
Step-by-step explanation:
Answer:
5/4, 1.3, 1 8/25
Step-by-step explanation:
5/4=1.25
1 8/25=1.32
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Answer:
15w + 5
Step-by-step explanation:
(2w + 13w) + (4 + 1)
I think that's correct
F(x) = -5/6x - 3
You can get this by identifying the y-intercept and then using the formula for slope given any two points on the graph.
