Assume the likelihood that any flight on Delta arrives within 15 minutes of the scheduled
time is 80%. We select six flights at random from yesterday for the study.
a. What is the probability that all six flights arrived within 15 minutes of scheduled arrival
times? (2 pts)
b. What is the expected value for the number of flights arriving within 15 minutes of their
scheduled time from the random sample of six flights? ( 1 pts )
c. What's the probability that more than 4 of the six flights arrived within 15 minutes of
their scheduled arrival time? (2 pts)
d. What is the probability that at least one of the six flights were late? (i.e. did not arrive
within 15 minutes of the scheduled arrival) PLEASE USE EXCEL AND SHOW THE CORRECT FUNCTIONS!!!! WRITE OUT STEP BY STEP PLEASE