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Recent questions tagged p244

The marks secured by $400$ students in a Mathematics test were normally distributed with mean $65$. If $120$ students got more marks above $85$, the number of students securing marks between $45$ nd $65$ is

asked Jun 3, 2013 by poojasapani_1

1 answer

If $f(x)$ is a p.d.f of a normal variate $x$ and $X\sim N(\mu,\sigma^{2})$ then $\int\limits_{-\infty}^{\mu}f(x)dx $ is

asked Jun 3, 2013 by poojasapani_1

1 answer

The random variable $X$ follows normal distribution $f(x)=ce\large\frac{-1/2(x-100)^{2}}{25}$ Then the value of $c$ is

asked Jun 3, 2013 by poojasapani_1

1 answer

If $f(x)$ is a p.d.f of a normal distribution with mean $\mu$ then $\int\limits_{-\infty}^{\infty}f(x)dx$ is

asked Jun 3, 2013 by poojasapani_1

1 answer

In a poisson distribution if $P(X=2)=P(X=3)$ then the value of its parameter $\lambda$ is

asked Jun 3, 2013 by poojasapani_1

1 answer

For a poisson distribution with parameter $ \lambda=0.25$ the value of the $2^{nd}$ moment about the origin is

asked Jun 3, 2013 by poojasapani_1

1 answer

The distribution function $F(X)$ of a random variable $X$ is

asked Jun 3, 2013 by poojasapani_1

1 answer

Choose the correct answer in the points on the curve \(9y^2 = x^3\), where the normal to the curve makes equal intercepts with the axes are

asked Nov 28, 2012 by thanvigandhi_1

1 answer

Choose the correct answer in the normal to the curve \(x^2 = 4y\) passing \((1,2)\) is

asked Nov 28, 2012 by thanvigandhi_1

1 answer

Choose the correct answer in the normal at the point \((1,1)\) on the curve \(2y + x^2 = 3\) is

asked Nov 28, 2012 by thanvigandhi_1

1 answer

Choose the correct answer in the line \(y = mx + 1\) is a tangent to the curve \(y^2 = 4x\) if the value of \(m\) is

asked Nov 28, 2012 by thanvigandhi_1

1 answer

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