Which statement is true of normally distributed data ? ? a. approximately 68% of the data falls within 2 standard deviations (+-2) of the mean b. approximately 68% of the data falls within 1 standard deviation (+-1) of the mean c. approximately 75% of the data falls within 2 standard deviations (+-2) of the mean d. approximately 75% of the data falls within 1 standard deviation (+-1) of the mean

The correct option is b. approximately 68% of the data falls within 1 standard deviation (+-1) of the mean

Explanation:

According to the empirical rule of normal distribution:

1. Approximately 68% of the data falls within 1 standard deviation of the mean

2. Approximately 95% of the data falls within 2 standard deviations of the mean

3. Approximately 99.7% of the data falls within 3 standard deviations of the mean.

Therefore, among the given options, only option b adheres to the empirical rule of the normal distribution. Therefore, the option b is correct

when studying polynomials, you often hear the terms zeros, roots, factors and x x the multiplicity of a zero is important because it tells us how the graph of the let's look at the graph of a function that has the same zeros

step-by-step explanation: