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Stats F3
| Question | Answer |
|---|---|
| Two events A and B are ___________ if A and B have no outcomes in common | Mutually Exclusive |
| Suppose a coin is tossed and a die is rolled simultaneously. Which of the following is not in the sample space? | (H, 0) |
| T or F. There are (6β5β3) possible meal options for lunch if I have 6 choices for appetizer, 5 choices for main course and 3 choices for dessert. | T |
| There are 4C4 distinct permutations of the word βMATHβ Group of answer choices True False | T? |
| There are 52P5 ways of drawing 5 cards from a standard deck of 52 cards, disregarding the order of selection. Group of answer choices True False | F |
| If E and F are dependent, then π(πΈβͺπΉ)=π(πΈ)+π(πΉ) Group of answer choices True False | F? |
| Probability refers to the likelihood of occurrence of an event Group of answer choices True False | T |
| When computing classical probability, it is important to perform the experiment and tabulate actual results. Group of answer choices True False | F? |
| The Probability that Bennie is absent this afternoon is 1.014 Group of answer choices True False | F |
| If E and B are mutually exclusive and P(E)=0.3, P(B)=0.4, then P(Eβ©B)=0.7 Group of answer choices True False | F? |
| For most years, 0.95 of the population diagnosed with a certain cancer is adults and 0.05 is female. If a cancer patient person is selected at random, find the probability that the person is a female given that the person is an adult. | 0.05 |
| If π΄ and B are independent events and π(π΄)=0.6,π(π΅)=0.3, what is π(π΄βͺπ΅)? (Required answer: Decimal) | P(AβͺB)=P(A)+P(B)βP(Aβ©B) P(Aβ©B)=P(A)β P(B)=0.6β 0.3=0.18 P(AβͺB)=0.6+0.3β0.18 = 0.72 |
| If π΄ and B are independent events and π(π΄)=0.8,π(π΅)=0.6, what is π(π΄βͺπ΅)? (Required answer: Decimal) | P(AβͺB)=P(A)+P(B)βP(Aβ©B) P(Aβ©B)=0.8β 0.6=0.48 P(AβͺB)=0.8+0.6β0.48 = 0.92 |
| If one card is drawn from an ordinary deck of cards, find the probability of getting an ace or a spade. (Required answer: Fraction) | 4+(13-1)=16/52 16/52=4/13 |
| If one card is drawn from an ordinary deck of cards, find the probability of getting a queen or a red card (Required answer: Fraction) | 7/14 |
| The __________ of two events A and B, is the event containing all elements that belong to both A or to B, or to both | Union |
| It refers to the process of observing a phenomenon that has variation in its outcomes. Group of answer choices Event Probability Result Experiment | Experiment |
| There are 4! distinct permutations of the word βLOVEβ Group of answer choices True False | T |
| There are 20P5 different ways a researcher can select 5 rats from 20 rats and assign each to a different test. | T |
| In an experiment of rolling a die and flipping a coin simultaneously, there are (6+2) outcomes in the sample space. Group of answer choices True False | F |
| The Probability of an event is classically defined as the ratio of the number of outcomes on the event to the number of outcomes on the Sample Space Group of answer choices True False | T |
| If the coin is fair, the probability of getting a Head must be 0.5 Group of answer choices True False | T |
| At a university, the probability that a student takes Statistics and is a Scholar is 0.063. The probability that a student is a Scholar is 0.21. Find the probability that the student is taking Statistics, given that he or she is a Scholar. | 0.3 |
| If one card is drawn from an ordinary deck of cards, find the probability of getting a king or a queen. (Required answer: Fraction) | 2/13 |
| Three cards are drawn from a deck without replacement. Find the probability that all are black cards. (Required answer: Fraction) | 2/17 |
| If one card is drawn from an ordinary deck of cards, find the probability of getting a 9 or a 10 (Required answer: Fraction) | 2/13 |
| Any non-empty subset of the sample space is Group of answer choices A probability space A Null Space A Result An Event | An Event ? |
| When drawing a card from an ordinary deck, the event drawing the ace of hearts is a Group of answer choices Compound Event Null Space Sample Space Simple Event | Simple Event |
| There are 2^20 possible ways of answering a 20 item true-or-false exam Group of answer choices True False | T |
| There are 10P2 possible ways of answering a 10 item true-or-false exam Group of answer choices True False | F |
| The Probability of the whole Sample Space is 1. Group of answer choices True False | T |
| The Probability of an event can never exceed 1. T or F | T |
| The Probability of the null space is 1. Group of answer choices True False | F |
| The probability that Mom will buy me a new car is 0.37. The probability that she wonβt is 0.63. Group of answer choices True False | T |
| If one card is drawn from an ordinary deck of cards, find the probability of getting a 4 or a heart. (Required answer: Fraction) | 4/13 |
| If one card is drawn from an ordinary deck of cards, find the probability of getting a spade or a heart (Required answer: Fraction) | 1/2 |
| In a pizza restaurant, 85% of the customers order pizza. If 55% of the customers order pizza and a salad, find the probability that a customer who orders pizza will also order a salad. (Required answer: Decimal) | 0.65 |