Test
Statistics 13, Midterm 1, Chapter 4
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Preguntas del test (29)
1As a procedure is repeated again and again, the relative frequency of an event tends to approach the actual probability. This is known as_______.
- AThe Law of Large Numbers
- BThe Rare Event Rule
- CAn Impossible Event
- DSubjective Possibility
2The _______ for a procedure consists of all possible simple events or all outcomes that cannot be broken down any further.
- ASample Space
- BProbability
- CInterpretation
- DRare Event Rule
3Which of the following is NOT a principle of probability?
- AAll events are equally likely in any probability procedure.
- BThe probability of an impossible event is 0.
- CThe probability of an event that is certain to occur is 1.
- DThe probability of any event is between 0 and 1 inclusive.
4The classical approach to probability requires that the outcomes are _______.
- AListed
- BPositive
- CRare
- DEqually likely
5When randomly selecting adults, let M denote the event of randomly selecting a male and let B denote the event of randomly selecting someone with blue eyes. What does P(M|B) represent? Is P(M|B) the same as P(B|M)?
- AThe probability of getting a male and getting someone with blue eyes; Yes, because P(B|M) represents the probability of getting a male, given that someone with blue eyes has been selected.
- BThe probability of getting someone with blue eyes, given that a male has been selected; Yes, because P(B|M) represents the probability of getting someone with blue eyes, given that a male has been selected.
- CThe probability of getting a male, given that someone with blue eyes has been selected. No, because P(B|M) represents the probability of getting someone with blue eyes, given that a male has been selected.
- DThe probability of getting a male or getting someone with blue eyes; No, because P(B|M) represents the probability of getting a male, given that someone with blue eyes has been selected.
6Statistics and probability are directly related but separate fields
- AVerdadero
- BFalso
7Probability is the mean in which statistical work is done.
- AVerdadero
- BFalso
8Inferential statistics is not possible without probability.
- AVerdadero
- BFalso
9All probabilities are numbers between 0 and 1.
- AVerdadero
- BFalso
10Events that are ___ cannot occur at the same time.
- ADisjoint
- BDouble Counted
- CIndependent
- DUnusually
11I know to apply the multiplication rule when I see what key word(s)?
- A“Given” or “If”
- B“Or”
- C"And"
- A“Given” or “If”
12I know to apply the addition rule when I see what key word(s)?
- A“Or”
- B“Given” or “If”
- C“And”
- A“Or”
13I know to apply the conditional probability rule if I see the word(s)?
- A"Or"
- B"Given" or "If"
- C"And"
- A"Or"
14If selections are made with replacement, then events are considered:
- AIndependent
- BDependent
15When applying the multiplication rule, I need to determine if the events are:
- ADisjoint
- BIndependent
16If selections are made without replacement, then events are considered:
- ADependent
- BIndependent
17When applying the addition rule, I need to determine whether events are:
- ADisjoint
- BIndependent
18P (A or B) indicates ___.
- AThe probability that in a single trial, event A occurs, event B occurs, or they both occur.
- BThe probability that A and B both occur in the same trial.
- CThe probability that event A occurs in one trial followed by event B in another trial.
- DThe probability that event A or event B does not occur in a single trial.
19Which word is associated with multiplication when computing probabilities?
- ANot
- BDisjoint
- COr
- DAnd
20What does P(B|A) represent?
- AThe probability of event B occurring after it is assumed that event A has already occurred.
- BThe probability of event A occurring after it is assumed that event B has already occurred.
- CThe probability of event A or event B or both occurring
- DThe probability of event A and event B both occurring
21Two events A and B are _______ if the occurrence of one does not affect the probability of the occurrence of the other.
- AMutually Exclusive
- BDisjoint
- CIndependent
- DDependent
22Selections made with replacement are considered to be _______.
- AControlled
- BIndependent
- CRedundant
- DDependent
23"At least one" is equivalent to _______.
- A“one or more”
- B“more than one”
- C"one or less”
- D"less than one"
24The complement of "at least one" is _______.
- A"one or less"
- B"none"
- C"more than one"
- D"one"
25A ______ probability of an event is a probability obtained with knowledge that some other event has already occurred.
- AConditional
- BComplementary
- CRare
- DSubjective
2634. For a sequence of events in which the first event can occur n1 ways, the second event can occur n2 ways, the third event can occur n3 ways, and soon, the events together can occur a total of n1 * n2 * n3 * … ways. This is called ____.
- AThe multiplication counting rule.
- BThe unusual events rule.
- CThe addition rules
- DSimulation
27If the order of the items selected matters, then we have a _______.
- APermutation Problem
- BCombination Problem
28In a state pick 4 lottery game, a bettor selects four numbers between 0 and 9 and any selected number can be used more than once. Winning the top prize requires that the selected numbers match those and are drawn in the same order. Do the calculations for this lottery involve the combinations rule or either of the two permutations rules? Why or why not? If not, what rule does apply?
- AThe combination rule applies to this problem because the numbers are selected with replacement. Neither of the permutations rules allows replacement.
- BThe combination and permutations rules do not apply because repetition is allowed and numbers are selected with replacement. The factorial rule applies to this problem.
- CThe permutation rule (with different items) applies to this problem because repetition is allowed. The permutation rule (with some identical items) and the combination rule cannot be used with repetition.
- DThe combination and permutations rules do not apply because repetition is allowed and numbers are selected with replacement. The multiplication counting rule applies to this problem.
29A combination lock uses three numbers between 1 and 85 with repetition, and they must be selected in the correct sequence. Is the name of"combination lock" appropriate? Why or why not?
- AYes, because the combinations rule would be used to determine the total number of combinations.
- BNo, because factorials would be used to determine the total number of combinations.
- CNo, because the permutations rule would be used to determine the total number of combinations.
- DNo, because the fundamental counting rule would be used to determine the total number of combinations.
Información
- Descripción
- Statistics 13 Test sobre Statistics 13, Midterm 1, Chapter 4, creado por Crystani C'Mickey Freeman el 03/02/2019.
- Idioma
- English
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