Mathematics, 02.07.2019 23:30 Savagepanda911
Afreight train leaves a station traveling 60 miles per hour. 30 minutes later, a passenger train leaves the station in the same direction on a parallel track at a speed of 72 miles per hour. how long will it take the passenger train to catch the freight train?
Answers: 1
Mathematics, 21.06.2019 17:00, michibabiee
Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.
Answers: 1
Mathematics, 21.06.2019 21:30, amesha62
In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?
Answers: 1
Afreight train leaves a station traveling 60 miles per hour. 30 minutes later, a passenger train lea...
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