Number of passengers who arrive at the platform in an amtrack train station for the 2 pm train on a saturday is a random variable with a mean of 180 and a standard deviation of 25. a. with what probability can we assert that there will be between 80 and 280 passengers? b. with what probability can we assert that there will be between 130 and 230 passengers?

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)