ANSWER
EXPLANATION
We want to simplify
The fractions have the same denominator so we write one denominator and add the numerators to obtain,
Regroup in the denominator to get,
This simplifies to;
Answer:
The proportion of individuals score at most 74 points on this test is 70%.
Step-by-step explanation:
The complete question is:
Suppose that the scores on a reading ability test are normally distributed with a mean of 70 and a standard deviation of 8. What proportion of individuals score at most 74 points on this test? Round your answer to at least four decimal places.
Solution:
Let <em>X</em> represent the scores on a reading ability test.
It is provided that 
.
Compute the probability that an individuals score is at most 74 points on this test as follows:
Thus, the proportion of individuals score at most 74 points on this test is 70%.
Answer:
C
Step-by-step explanation:
150 times 7 divided by 35
what level is this question?
