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Relative Frequency and Probability
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An event has the probability of occuring equal to 0. What word can be used to describe this probability?
1 ポイント
Certain
Impossible
Likely
Unlikely
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How many elements are there in the sample space when two cards are selected without replacement from cards labelled A, B, C, D, E, F, G ?
1 ポイント
7
14
42
49
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A three-digit number is formed from the digits 1, 3, 6 and 7. What is the probability that the number formed will be odd?
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0.25
0.5
0.75
0.8
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A card is chosen from a set of cards labelled 1, 2, 3, 4 and 5. What is the probability that the card has an even number or a number divisible by 3 on it?
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10%
50%
60%
100%
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A box contains red, white and blue marbles. The probability of selecting a red marble is 0.3 and a blue marble is 0.6. What is the probability of selecting a white marble
1 ポイント
0.1
0.36
0.63
0.9
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A letter is chosen at random form the word WEDNESDAY. What is the probability that the letter will not be a vowel?
1 ポイント
1/9
2/9
1/3
2/3
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The frequency of an event is 12 and the total number of times the experiment was conducted was 40. What is the relative frequency?
1 ポイント
14%
26%
30%
70%
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Two unbiased coins are tossed 50 times. Which is the correct calculation for determining the expected number of times you would get a tail and a head?
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1/4 x 50
1/2 x 50
1/3 x 50
1/4 x 100
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A card is selected at random from a normal pack of playing cards. The card is replaced each time. What is the expected number of times you would select an Ace from 260 trials.
1 ポイント
5
20
52
65
その他:
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A letter is chosen from the word "SUCCESS". The probability that the letter is neither C nor S is:
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2/7
3/5
5/7
4/7
その他:
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