The sample mean for these data is = 15.95 min. The dotplot shows the distribution of the sample mean time to travel to school for 400 random samples of size 20 taken with replacement from the original sample. Use the results of the simulation to approximate the margin of error for the estimate of the mean time to travel to school.

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

answer is  

a.

p = 78

step-by-step explanation: