Answer:
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
Answer:
a) negative
Step-by-step explanation:
When you multiply a given negative number by a positive number, the result becomes smaller than the original.
For instance let
be the original number.
Multiply by 2.
The result is -200
We know 
The correct answer is A.
Answer:
9
Step-by-step explanation:
at most he can use 9 nickels to get the answer
The answer will be the last one as it equals 4x + 3. this means that the equation will be parallel and does not have a solution.