Answer:
<em>The probability of obtaining a score less than 60 is 2.28%
</em>
<em>It happens 2 out of 100 times.</em>
Step-by-step explanation:
If the mean μ = 80 and the standard deviation σ = 10, then we need to find the probability that an X value is less than 60.
Then we find

To find this probability we use the Z statistic.



This is the same as

We look for this value in the table for the normal distribution of right queue and we have:

<em>The probability of obtaining a score less than 60 is 2.28%
</em>
<em>It happens 2 out of 100 times.</em>
Answer:c
Step-by-step explanation:
The area of parallelogram A is;
Area = 312²
A = bh = 13 · 24 = 312
The area of parallelogram B is;
Area = 195²
A = bh = 15 · 13 = 195
The area of parallelogram B is;
Area = 384²
A = bh = 24 · 16 = 384
The answer is -3 . Use the gradient formula y2-y1/x2-x1