Answer:
48 percent!
Step-by-step explanation:
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
#SPJ1
Answer:gay
Step-by-step explanation:
Negative...
-10/7
positive
10/7
Answer: B: 85 °
Step-by-step explanation: I'm pretty sure that the triangle adds up up 360 degrees. When you add the 2 points together you get 275 and 360 minus 275 is equal to 85. Im not sure this is right, but im pretty sure
