11th Class Statistics MCQS
F(y1) ? F(y2) if
y?1/2
y1?y2
y1= y2
Y1>y2
The probability of a continuous random variable at x = a is —————
One
More than one
Zero
Between 0 and 1
E(x – ?) is equal to:
E(x)
X – ?
zero
?
The probability of continuous random variable at x = a is__________.
One
Zero
Between
More then one
F(-) is always equal to
Negative one
Zero
One
Two
Which one is not an example of random experiments.
A six sided aid is rolled
All medical insurance clams received by a company in a given year.
A coin is tossed and the outcome is either a head or a tail
Some one of person will be admitted to a hospital emergency room during any hour.
For discrete random variable X the expectation of X I-e E(x) is equal to:
?x2p(x)
?xp(x)
?p(x)
One
A probability function is _________ function.
Mathematical
Converges
Mathematical expectation
None of these
Var (B/aX) =?
b2/a Var(X)
None of these
b2/a2 Var(X)
1/aVar(X)
If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.
1,3,3,1
0,1,2,3
1,1,1,1
1,2,3
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