Which statement is true of normally distributed data? A.
Approximately 90% of data falls within 2 standard deviations (±2) of the mean.

B.
Approximately 90% of data falls within 3 standard deviations of (±3) the mean.

C.
Approximately 95% of data falls within 2 standard deviations (±2) of the mean.

D.
Approximately 95% of data falls within 3 standard deviations (±3) of the mean.

C

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

Explanation

According to the empirical rule of normal distribution:

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 C adheres to the empirical rule of the normal distribution. Therefore, the option C is correct

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!