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IF the mean and S.D. of binomial distrib...

IF the mean and S.D. of binomial distribution are 20 and 4 respectively. Than the number of trials , is

A

50

B

25

C

100

D

80

Text Solution

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The correct Answer is:
B
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MOCK TEST 3-MCQS
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  2. Solution of the differential equation (dy)/(dx)=(y(x-y ln y))/(x(xlnx-...

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  3. IF the mean and S.D. of binomial distribution are 20 and 4 respectivel...

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  4. The vertices of a triangle are A (-1, -7), B (5, 1) and C(1, 4). The ...

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  5. Let A=[(1,2),(-1,3)] .If A^6=kA-205I then then numerical quantity of...

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  6. if sqrt(x^2+y^2)=ae^(tan^-1 (y/x)) , a > 0, (y(0) > 0) then y"(0) equa...

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  7. int (cos2theta) . log((costheta+sintheta)/(costheta-sintheta...

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  8. int(pi//2)^(pi//2)(cosx)/(1+e^(x))dx is equal to

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  9. Two of the straight lines given by 3x^(3)+3x^(2)y-3xy^(2)+dy^(3)=0 are...

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  10. 18. The straight lines joining the origin to the points of intersectio...

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  11. The lines (x+1)/(1)=(y-1)/(2)=(z-2)/(1),(x-1)/(2)=(y)/(1)=(z+1)/(4) ar...

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  12. The slope of the tangent to a curve y=f(x) at (x,f(x)) is 2x+1. If the...

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  13. The solution of the differential equation {y(1+x^(-1))+siny}dx+(x+ln x...

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  14. if p implies(q ^^ r) is false, then the truth values of p, q and r ar...

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  15. Find the value of expression 1 / (cos 290^@) + 1 / (sqrt3 sin 250^@)

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  16. If In is the identity matrix of order n then (In)^(-1)=

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  17. The value of tan^(2)(sec^(-1)2)+cot^(2)(cosec^(-1)3) is

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  18. If in Delta ABC, tan.(A)/(2) = (5)/(6) = (2)/(5), then prove that a, b...

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  19. If one of the lines of the pair ax^(2)+2hxy+by^(2)=0 bisects the angle...

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  20. The values of theta in (0,(pi)/(2)) satisfying

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