If 1,200 customers register for new accounts at a social media website every day, what fraction of the first 60,000 new accounts are registered in the first 5 days?
36 items match · Math · Probability and conditional probability
The table above gives the number of United States presidents from 1789 to 2015 whose age at the time they first took office is within the interval listed. Of those presidents who were at least 50 years old when they first took office, what fraction were at least 60 years old?
To the nearest tenth of a percent, what percent of states with a state-level sales tax do not have a state-level income tax?
For a particular machine that produces beads, out of every beads it produces have a defect. A bead produced by the machine will be selected at random. What is the probability of selecting a bead that has a defect?
A bag contains a total of 60 marbles. A marble is to be chosen at random from the bag. If the probability that a blue marble will be chosen is 0.35, how many marbles in the bag are blue?
The number of penguins in a zoo exhibit, sorted by gender and type of penguin, is shown in the table above. Which type of penguin has a female population that is the closest to being of the total female penguin population in the exhibit?
There are buttons in a bag: white buttons, orange buttons, and brown buttons. If one of these buttons is selected at random, what is the probability of selecting a white button?
A box contains red pens and blue pens. If one of these pens is selected at random, what is the probability of selecting a red pen? (Express your answer as a decimal or fraction, not as a percent.)
The table above shows the number of people who work in the Human Resources and Accounting departments of a company and the highest level of education they have completed. A person from one of these departments is to be chosen at random. If the person chosen works in the Human Resources department, what is the probability that the highest level of education the person completed is a master’s degree?
If a caller last Monday who asked about his or her bill is selected at random, which of the following is closest to the probability that the customer also asked for repairs?
The table summarizes the distribution of color and shape for tiles of equal area.
| Red | Blue | Yellow | Total | |
|---|---|---|---|---|
| Square | ||||
| Pentagon | ||||
| Total |
If one of these tiles is selected at random, what is the probability of selecting a red tile? (Express your answer as a decimal or fraction, not as a percent.)