Probability and Statistics Quiz
Authored by Konstantin Choi
Mathematics
University
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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Events are equally possible if …
none of them will necessarily happen as a result of a trial
there is reason to consider that none of them is more possible (probable) than other
there is reason to consider that one of them is more possible (probable) than other
at least one of them will necessarily happen as a result of a trial
one of them will necessarily happen as a result of a trial
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The probability of the event A is determined by the formula
PA=|Ω||A|, where is the space of elementary outcomes
PAB=|A||B|, where is the space of elementary outcomes
PA= A|Ω|, where is the space of elementary outcomes
PA=λmm!e-λ, where λ is the space of elementary outcomes
PBA=λmm!, where is the space of elementary outcomes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The probability of a reliable event is equal to …
1
0
½
1/3
1/5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The probability of an impossible event is equal to …
0
1
½
1/3
1/5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The probability of a random event is …
the positive number between 0 and 1
the positive number between 0 and ½
the positive number between 0 and 10
the positive number between 0 and 1/3
the positive number between 0 and 1/5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The relative frequency of the event A is defined by the formula:
WA=mn, where m is the number of appearances of the event, n is the total number of trials.
WA=mn, where n is the number of appearances of the event, m+1 is the total number of trials.
WA=mn, where m+1 is the number of appearances of the event, n is the total number of trials.
WA=m+1n, where m is the number of appearances of the event, n is the total number of trials.
WA=mn+1, where m is the number of appearances of the event, n is the total number of trials.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of all possible permutations
Pn=n!
Pn=n!m!
Pn=n!m!n-m!
Pn=n!n-m!
Pn=(n+1)!
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