For a binomial distribution, if probability of success is double the probability of failure and n=4, then find variance of the distribution.

For a binomial distribution, if probability of success is double …

If $P\left(1.1 \leq z \leq z_1\right)=0.125$ for the standard normal variable $Z$, find the value of $z_1$.

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If the events $A$ and $B$ are independent and $3P(A) = 2P(B) = 0.12,$ then find $P(A ∩ B).$

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From the data on price and quantity of items, the following results are obtained:

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If $n =7,2 d^{2}=4, CF =1 ;$ Find $r$

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Obtain the derivatives of the following function with the help of definition: $f(x)=2 x+3$

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Determine whether the function $y=12+4x-7x^{2}$ is increasing or decreasing at $x=2$.

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Write the properties of correlation coefficient.

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Find $f^{\prime \prime}(0)$ if $f(x)=x^4-4 x^3+3 x^2+x+1$.

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State the limitations of graphical method to measure trend.

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The probability distribution of a random variable is as follows: $p(x)=\frac{x-3}{10}$ $x=-2,-$, Hence, calculate $E\left(X^2\right)$.

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