Cumulative Binomial Probability

The local bus service does not have a good reputation. The 8 am bus will run late on average two days out of every five. For any week of the year taken at random, find the probability of the 8 am bus being on time: All 7 days

• 0.028

• 0.2

• 0.4

• 0.05

The local bus service does not have a good reputation. The 8 am bus will run late on average two days out of every five. For any week of the year taken at random, find the probability of the 8 am bus being on time:

on any 6 days

• 0.2

• 0.131

• 0.33

• 0.412

In a multiple choice test there are 10 questions. Each question has 5 choices, one of which is correct. Raj knows absolutely nothing about the subject, and guesses each answer at random. Given that the pass mark is 70%, determine the probability that he will pass.

• .00073

• .086

• .000864

• .00092

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

An infectious flu virus is spreading through a school. The probability of a randomly selected student having the flu next week is 0.3. Mr. C has a class of 25 students

Calculate the probability that at least 2 or more students from Mr. C's class will have the flu next week

• 0.998

• 0.868

• 0.958

• 0.889

During a season, a basketball player has an 85% success rate in shooting from the free throw line. In one match the basketballer has 20 shots from the free throw line. FInd the probability that the basketballer is successful with all 20 throws

• 0.048

• 0.0388

• 0.0278

• 0.356

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

During a season, a basketball player has an 85% success rate in shooting from the free throw line. In one match the basketballer has 20 shots from the free throw line. FInd the probability that the basketballer is successful with at least 18 throws

• 0.405

• 0.512

• 0.645

• 0.325

During a season, a basketball player has an 85% success rate in shooting from the free throw line. In one match the basketballer has 20 shots from the free throw line. FInd the probability that the basketballer is successful with between 14 and 17 throws

• 0.435

• 0.573

• 0.654

• 0.725