Some students were surveyed on campus about their study habits. Some said they study in the morning. Others study during the day between classes, and others study at night. Some students study in the library and others always study in the lab. The distribution is shown below: How students study Morning Between classes Evening Study in the library [a] [b] [c] Study in the lab [d] [k] [f] If a student who was surveyed is selected at random, find the probability that the student studies in the morning. (Leave your answer in TWO decimal form)
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A pair of dice is rolled. Find the probability of rolling d…
A pair of dice is rolled. Find the probability of rolling doubles. (Leave your answer in fraction form)
Five balls are numbered 1 through 5 and placed in a box. Two…
Five balls are numbered 1 through 5 and placed in a box. Two balls are selected without replacement. Find the probability that the sum of the numbers is a multiple of 3 (or divisible by 3). (Hint: you may want to construct a sample space first)
1,000 tickets are sold at $[c] each in a raffle for a color…
1,000 tickets are sold at $[c] each in a raffle for a color TV valued at $[P]. If a person purchases one ticket, what is the expected value of the ticket?
Three coins are tossed. Find the probability that at most tw…
Three coins are tossed. Find the probability that at most two coins land heads up.
A pair of dice is rolled. Find the probability of rolling d…
A pair of dice is rolled. Find the probability of rolling doubles or a sum of 10. (Leave your answer in fraction form)
3 cards are drawn from a deck. After each card is drawn, its…
3 cards are drawn from a deck. After each card is drawn, its denomination and suit are noted and it’s mixed back into the deck before the next card is drawn. Find the probability of getting 3 sevens. Recall information about a deck of cards: – 4 suits (clubs, diamonds, hearts and spades) – Clubs and spades are black cards. Diamonds are hearts are red cards. In a deck, 26 red cards and 26 black cards. – 13 cards in each suit (ace, 2, 3, 4, 5, 6,7,8,9,10, jack, queen and king), also called 13 denominations – Jacks, queens and kings are picture cards. 12 picture cards in a deck
The odds against of an event are 4 : 7. Find the probabilit…
The odds against of an event are 4 : 7. Find the probability that the event will occur.
A pair of dice is rolled. Find the probability of rolling d…
A pair of dice is rolled. Find the probability of rolling doubles or a sum of 4. (Leave your answer in fraction form)
A pair of dice is rolled. Are rolling doubles and rolling a…
A pair of dice is rolled. Are rolling doubles and rolling a sum of 2 mutually exclusive events?