QUESTIONS WITH SOLUTIONS GRADED A+
◍ Consider rolling two number cubes, each of which has its faces
numbered from 1 to 6. The cubes will be rolled and the sum of the
numbers landing face up will be recorded. Let the event E represent
the event of rolling a sum of 5. How many outcomes are in the
collection for event E ? Answer: 4
◍ In a certain population of birds, about 40 percent of the birds have
a wingspan greater than 10 inches. Biologists studying the birds will
create a simulation with random numbers to estimate the probability
of finding 1 bird in a sample of 6 birds with a wingspan greater than
10 inches. Which of the following assignments of the digits 0 to 9 will
model the population? Answer: Let the digits from 0 to 3 represent
birds with a wingspan greater than 10 inches and the remaining digits
represent birds with a wingspan less than or equal to 10 inches.
◍ Each person in a group of twenty people at a hotel orders one meal
chosen from oatmeal, eggs, or pancakes and one hot beverage chosen
from coffee or tea. One person will be selected at random from the
twenty people. What is the sample space for the meal and beverage
for the person selected?` Answer: {(oatmeal, coffee), (oatmeal, tea),
(eggs, coffee), (eggs, tea), (pancakes, coffee), (pancakes, tea)}
◍ At Mike's favorite coffee shop, the coffee of the day is either a dark
roast, a medium roast, or a light roast. From past experience, Mike
knows that the probability of the coffee being a light roast is 0.15 and