Answer:
(a) 2%
Step-by-step explanation:
A score of 60 is 2 standard deviations below the mean (80 -2·10 = 60). The empirical rule tells you that 95% of the distribution is within 2 standard deviations of the mean. The remaining 5% is split evenly between those that are more than 2 SD above the mean and those that are more than 2 SD below the mean.
That tells you the percentage who failed is about 2.5%. The best answer choice is 2%.
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<em>Additional comment</em>
The empirical rule is a little bit sloppy, but it gets you in the ballpark. The actual percentage is closer to 2.275%.
Answer:
12
Step-by-step explanation:
a box - and - whisker plot. The number line goes from 0 - 52.
Answer:
area of parllelogram=base×height=(4+8)×7=12×7=
84m²
Answer:
b and d
Step-by-step explanation:
parallel means go in the exact same direction and if they never ended, they would never touch
Answer:
F is 0
Step-by-step explanation:
If you divide X on both sides to get X on one side, it will end with F = -2 + 2, which is 0
