1
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

Mean and variance of six observations are 8 and 16 respectively. If each observation is multiplied by 3, then new variance of the resulting observations is

A
16
B
48
C
24
D
144
2
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The variance, for first six prime numbers greater than 5, is

A
27
B
28
C
15
D
20
3
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If the mean and S.D. of the data $$3,5,7, a, b$$ are 5 and 2 respectively, then $$a$$ and $$b$$ are the roots of the equation

A
$$x^2-10 x+18=0$$
B
$$2 x^2-20 x+19=0$$
C
$$x^2-10 x+19=0$$
D
$$x^2-20 x+18=0$$
4
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

A random variable $$\mathrm{X}$$ assumes values 1, 2, 3, ....., n with equal probabilities, if $$\operatorname{var}(X)=E(X)$$, then $$\mathrm{n}$$ is

A
4
B
5
C
7
D
9
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Medical
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Graduate Aptitude Test in Engineering
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CBSE
Class 12