Answer:

Step-by-step explanation:

The Standard Deviation Rule states that for a normal distribution, nearly all of the data will fall within three standard deviations of the mean . The empirical rule is further illustrated below

68% of data falls within the first standard deviation from the mean.

95% fall within two standard deviations.

99.7% fall within three standard deviations.

The distribution of the IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100 and a standard deviation of 15.

Therefore, the range of IQ scores that many (68%) people have is between

100 - 15 and 100 + 15

It becomes

85 to 115

**Answer: C) x = 7**

**Step-by-step explanation:**

Since we have the same base, equal the exponents.

The total will be about 311,106 people.

This is an exponential equation problem. We have a starting value and a rate of increase. If we plug in the numbers, we just have to evaluate the expression. We will use 8 for the number of years from 1992 to 2000.

**Answer:**

d

**Step-by-step explanation:**

**Answer:**

y=x+3

**Step-by-step explanation:**