Numerade

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Lynn Larson

Numerade educator

Determine which of the given procedures meets the criteria of a binomial experiment. -counting how many 20 club members have green eyes. -observing the price of each piece of art in the auction. -taking 3 out of 7 rings from a casket and finding the number of silver rings taken. -asking people to choose which oneof the 4 payment sytems they perfer to use.

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Determine which of the given procedures meets the criteria of a binomial experiment. -counting how many of 10 cards drawn from a standard deck with replacement as red. -taking 6 out of 15 fruits from the basket and counting the number of apples taken. -determining the number of empty seats and in each car of the train. -surveying how people would rank 3 popular rsorts.

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Breanna Ollech

Numerade educator

Determine which of the given procedures meets the criteria of a binomial experiment. -Asking people to name their favorite text messenger. -choosing 5 out of 36 identical looking boxes and counting the number of boxes chosen that are not empty. -finding out the number of pages in each book on the shelf. -counting how many of 50 rooms have lights on at 4 in the morning.

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Anna D.

Numerade educator

A certain insecticide kills 50% of all insects in laboratory experiments. A sample of 13 insects is exposed to the insecticide in a particular experiment. What is the probability that no more than 4 insects will die ? Round your answer to the nearest ten-thousandth, if necessary.

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Jerelyn Nevil

Numerade educator

Determine which of the given procedures meets the criteria of a binomial experiment. -surveying how people would rank 3 popular resorts. -selecting 5 out of 20 students from the class and counting the number of males selected. -observing how many of the next 70 cars you pass by red. -counting the number of pills in each bottle of the medicine on the shelf.

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Gregory Higby

Numerade educator

During the NCAA basketball tournament season, affectionately called March Madness, part of one team's strategy is to foul their opponent if his free-throw shooting percentage is lower than his two-point field goal percentage. Drake's free-throw shooting percentage is lower and is only 56.1% . After being fouled he gets two free-throw shots each worth one point. Calculate the expected value of the number of points Drake makes when he shoots two free-throw shots.

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Gregory Higby

Numerade educator

Suppose that 10% of the time Henry attends a concert twice a week, 20% of the time he attends a concert once a week, and 70% of the time he doesn't attend a concert at all in a given week. What is the expected value for the number of times Henry attends a concert during a week?

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Gregory Higby

Numerade educator

During the NCAA basketball tournament season, affectionately called March Madness, part of one team's strategy is to foul their opponent if his free-throw shooting percentage is lower than his two-point field goal percentage. Amos's free-throw shooting percentage is lower and is only 57.5% . After being fouled he gets two free-throw shots each worth one point. Calculate the expected value of the number of points Amos makes when he shoots two free-throw shots.

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Breanna Ollech

Numerade educator

You need to borrow money for gas, so you ask your mother and your sister. You can only borrow money from one of them. Before giving you money, they each say they will make you play a game. Your sister says she wants you to roll a six-sided die. She will give you $4 times the number that appears on the die. Your mother says she wants you to flip a fair coin. She will give you $10 for heads and $20 for tails. Determine the expected value of each game and decide which offer you should take.

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Gregory Higby

Numerade educator

In American roulette, the wheel contains the numbers 1 through 36 , alternating between black and red. There are two green spaces numbered 0 and 00 . A player places a bet of $9.50 on red to play the game. If the ball lands on red, the player gets a $9.50 for winning and receives the money back. If the ball does not land on red, then the player simply loses the $9.50 placed on the bet. If the player places the same bet on red 39 times, what is the player’s expected winnings? Round your answer to the nearest cent.

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Addison C.