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Answer: Choice A</h3>
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Explanation:
Place your pencil on the curve. Then draw a straight vertical line either up or down until you reach the x axis. If you were to start at the left endpoint, and work your way to the right, you'll eventually shade the interval along the x axis.
We have two separate intervals being shaded in. There's a small gap from 3 to 4 that isn't shaded in.
Refer to the diagram below.
Equivalent fractions are fractions that have the same value. They can be found by reducing the fraction or by multiplying both the numerator and denominator by the same number.
In this case, 4 and 12 can both be divided by 4, so the fraction 4/12 can be reduced to 1/3.
1080-360 = 720
720-360=360
360-360=0
so tan 1080 = tan 0 = 0
Answer:
a) Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) 2.3%
Step-by-step explanation:
a) We are given that the distribution of test grades is a bell shaped distribution that is a normal distribution.
Formula:
Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) The z-score for a particular score is -2.
We have to evaluate
P(z < -2)
Calculating the value from normal z-table.
Thus, 2.3% of of the class scored lower than my friend.
The answer is ...
R = 5
8(5) = 40
