# Tag: Binomial Distribution

#### Solved:The first assignment in a statistical computing class involves running a short program. If past experience indicates

The first assignment in a statistical computing class involves running a short program. If past experience indicates that 40% of all students will make no programming errors, compute the (approximate)…

#### Solved (Free): False-positives in testing for HIV. A rapid test for the presence in the blood of antibodies to HIV, the virus that causes

False-positives in testing for HIV. A rapid test for the presence in the blood of antibodies to HIV, the virus that causes AIDS, gives a positive result with probability about…

#### Solved (Free): In the United States, 44% of the population has type O blood. Suppose a random sample of 12 persons is taken

In the United States, 44% of the population has type O blood. Suppose a random sample of 12 persons is taken. Find the probability that at most 6 of the…

#### Solved (Free): Richard has just been given a ten-question multiple choice test in his history class. Each question has five answers only one of which is correct

Richard has just been given a ten-question multiple choice test in his history class. Each question has five answers only one of which is correct. Since Richard has not attended…

#### Solved (Free): Among companies doing highway or bridge construction, 80% test employees for substance abuse

Among companies doing highway or bridge construction, 80% test employees for substance abuse (based on data from the Construction Financial Management Association) A study involves the random selection of 12…

#### Solved (Free): Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves

Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent's serves. Assume her opponent serves 8 times. Show all work.…

#### Solved (Free): A total of 16 mice are sent down a maze, one by one. From previous experience, it is believed that

A total of 16 mice are sent down a maze, one by one. From previous experience, it is believed that the probability a mouse turns right is .38. Suppose their…

#### Solved (Free): Of the 28 professors in a certain department, 18 drive foreign and 10 drive domestic cars. If five of these professors are selected at random

Of the 28 professors in a certain department, 18 drive foreign and 10 drive domestic cars. If five of these professors are selected at random, what is the probability that…

#### Solved (Free): According to the National Traffic Safety Council of Namibia, the probability that a traffic fatality will involve an intoxicated or alcohol-impaired driver

According to the National Traffic Safety Council of Namibia, the probability that a traffic fatality will involve an intoxicated or alcohol-impaired driver is 40%. If eight traffic fatalities observed last…

#### Solved (Free): The phone lines to an airline reservation system are occupied 50% of the time. Assume that the events that the lines are occupied

The phone lines to an airline reservation system are occupied 50% of the time. Assume that the events that the lines are occupied on successive calls are independent. Assume that…