driving times for students' commute to school is normally distributed, with a mean time of 14 minutes and a standard deviation of 3 minutes. using the empirical
rule, approximately what percent of students' commute time is between 11 and 17 minutes?
32%
68%
95%
99.7%

Using the empirical  rule, approximately 68 percent of students' commute time is between 11 and 17 minutes

Step-by-step explanation:

Given that driving times for students' commute to school is normally distributed, with a mean time of 14 minutes and a standard deviation of 3 minutes.  So, first we have to find z-score of 11 and 17 using z-score formula.

Also, we do aware that z-score says us a data point is how many standard deviations above or below mean. This z-score -1 and 1 indicates that 11 and 17 lie within one standard deviation of the mean. Therefore, by empirical rule, 68% data lies within one standard deviation of the mean. So, Option B is correct.

b

step-by-step explanation:

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1