Worksheets5.4 Review
Total questions: 9
Worksheet time: 45mins
A McDonald's location in LA is interested in gathering information on the number of people who order breakfast during non-breakfast hours now that it is served all day. Companywide, approximately 14% of non-breakfast hour sales go to breakfast items. To test this theory, they count the number of customers that don't buy breakfast items until a customer does. What is the probability that they will have more than 20 customers before one buys a breakfast item? Enter your answer as a decimal rounded to 2 decimal places.
(a)
You decide to roll a die until you get a 4. What is the mean of the distribution for the random variable that represents the number of trials that it will take to get the 4?
(a)
You decide to roll a die until you get a 4. What is the standard deviation of the distribution for the random variable that represents the number of trials that it will take to get the 4? Enter your answer as a decimal rounded to 2 decimal places.
(a)
28% of the students at Hilliard Darby High School have taken or are taking Spanish. You decide to randomly select students until you find one who has not taken Spanish. What is the probability that you will have to ask no more than 20 students?
(a)
A McDonald's location in LA is interested in gathering information on the number of people who order breakfast during non-breakfast hours now that it is served all day. Companywide, approximately 14% of non-breakfast hour sales go to breakfast items. To test this theory, they count the number of customers that don't buy breakfast items until a customer does. How many customers should they expect to have to ask before finding one who buys breakfast items? Enter your answer as a decimal rounded to 2 decimal places.
(a)
28% of the students at Hilliard Darby High School have taken or are taking Spanish. You decide to randomly select students until you find one who has taken Spanish. What is the probability that you will have to ask less than 10 students? Enter your answer as a decimal rounded to 2 decimal places.
(a)
You decide to roll a die until you get a 4. What is the probability that you will have to roll the die 3 or more times to get the 4? Enter your answer as a decimal rounded to 2 decimal places.
(a)
Miss Hurley is waiting patiently for one of her students to do their homework. She knows from past experience that they don’t do their homework 90% of the time. How many days should she expect to have to wait before they do their homework?
(a)
Miss Hurley is waiting patiently for one of her students to do their homework. She knows from past experience that they don’t do their homework 90% of the time. What is the probability that Miss Hurley will have to wait more than 2 school weeks for them to do their homework?
(a)
