According to a study, 80% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 80%, 10 out of 20 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is. (Round to three decimal places as needed.)

A cooler contains 100 ice cream bars. There are 30 Vanilla​ bars, 20 Mint Chocolate Chip​ bars,10 Chocolate​ bars, and 40 Rocky Road bars. If one bar is selected at random from the​ cooler, determine the probability that the bar selected is Vanilla​, Chocolate​, or Rocky Road.

A biology quiz consists of 10 multiple-choice questions. 6 must be answered correctly to receive a passing grade. If each question has 5 possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question will pass the examination?

On the first day of music class, students submitted a survey. One survey question asked students to report which music genre they prefer. Another question asked students how frequently they sing in the shower. The probability that a student prefers metal is 0.7, the probability that a student sings in the shower 1-2 times a week is 0.4 and the probability that a student prefers metal and sings in the shower 1-2 times a week is 0.3. What is the probability that a randomly chosen student prefers metal or sings in the shower 1-2 times a week?

According to the survey of American households, the probability that the household owns Smart 3D HDTV if the house has two earning members is 51%. Of the households surveyed, 47% did not have two earning members and 48%had Smart 3D HDTVs. The probability that a household does not have two earning members and does not own a Smart 3D HDTV is

The Chunky-Wunky Candle Company ships candles all over the world. The probability that a candle is broken during shipment is 3%. In a shipment of 3 candles, what is The probability that all three are broken. The probability that none of the candles are broken. The probability that the first candle unpacked is not broken and the rest are broken.

At a college, 68 % of courses have final exams and 43 % of courses require research papers. Suppose that 37 % of courses have a research paper and a final exam.  Find the probability that a course has NONE of these two requirements.

At a college, 82 % of courses have final exams and 47 % of courses require research papers. Suppose that 44 % of courses have a research paper and a final exam.  Find the probability that a course has a final exam or a research project

In world cup soccer the probability that a soccer team makes a penalty kick goal is about 72.5%. If a team attempts five consecutive penalty kicks, what is the probability that they will make at least one of the five attempts

A student takes a 28-question multiple-choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student guesses more than 75% of the questions correctly.