Question
9)A math class consists of 15 female students and 17 male students. Two students are selected at random to participate in a probability experiment. Compute
9)A math class consists of 15 female students and 17 male students. Two students are selected at random to participate in a probability experiment. Compute the following probabilities. Put your answers in decimal form. Round to the nearest thousandth as needed.
a. A male is selected, then a female. b. A female is selected, then a male. c. Two males are selected. d. Two females are selected. e. No males are selected.
10) Giving a test to a group of students, the grades and gender are summarized below
A | B | C | Total | |
Male | 18 | 14 | 9 | 41 |
Female | 4 | 12 | 16 | 32 |
Total | 22 | 26 | 25 | 73 |
If one student is chosen at random, find the probability that the student was female OR got an "A". Put your answer as a reduced fraction. P(female or "A") =
11) The table below shows the number of survey subjects who have received and not received a speeding ticket in the last year, and the color of their cars.
Speeding Ticket | No Speeding Ticket | Total | |
Red Car | 180 | 131 | 311 |
Not Red Car | 145 | 157 | 302 |
Total | 325 | 288 | 613 |
Find the probability that a randomly chosen person: a) Has a red car. b) Has a speeding ticket. c) Has a speeding ticket given they have a red car. d)Has a red car given they have a speeding ticket.
e) Has a red car and got a speeding ticket. f) Has a red car or got a speeding ticket. Putyour answers in decimal form, rounded to the nearest thousandth.
12)If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select is a heart or Queen? (Your answer must be in the form of a reduced fraction.) P(heart or Queen) =
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