Probabilities

In probability the words "and" means you would do what with the two probabilities

• add probailities

• multiply probabilities

• subtract probabilities

• divide probabilities

In probability the words "or" means you would do what with the two probabilities

• add probabilities

• multiply probabilities

• subtract probabilities

• divide probabilities

What goes on top when writing a probability as a fraction?

• total number of choices

• number of items you are looking for

• number of hearts

• number of kings

When writing probability of picking a card from a deck of cards, what number goes on bottom?

• Total number of Kings

• Total number of hearts

• Total number of cards

• Total number of red cards

Consider rolling a single die. The table shows the probability distribution of rolling a fair die where the random variable X is the number of dots. the mean was already solved. What is the implication of the value of the mean towards the given probability distribution? (5 points)

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The probailities that a customer will buy 1, 2, 3, 4, or 5 items in a mini mart are 3/10, 1/10, 1/10, 2/10, and 3/10 respectively. What is the average number of items that a customer will buy? Write the final answer in decimal form rounded up to 2 decimal place. (your answer must consist of the solved mean and the interpretation) (5 points)

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The probabilities that a surgeon operates on 3, 4, 5, 6, or 7 patients in a day are 0.15, 0.10, 0.20, 0.25, and 0.30 respectively (you may look at the given table). Find the average number of patients that a surgeon operates on a given day. (your answer must consist of the solved mean and the interpretation) (5 points)

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The probabilities that a surgeon operates on 3, 4, 5, 6, or 7 patients in a day are 0.15, 0.10, 0.20, 0.25, and 0.30 respectively (you may look at the given table). Find the average number of patients that a surgeon operates on a given day. (your answer must consist of the solved mean and the interpretation) (5 points)

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It is a function that associates a numerical value to every outcome of a random experiment denoted by X>

• complex function

• random variable

• sample space

• rational function

How many possible outcomes are there if you toss a fair coin thrice?

• two

• four

• eight

• sixteen