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What are the principles that must be adopted in determining class intervals of a frequency distribution

Show that the binomial distribution is symmetric when p=1/2

please help

I want to solve x4-8x3+4x+32=0 by Ferrari method. Please help

Perhaps I was unable to make you understand. I need only the real value of y for which the given expression will be a perfect square. x should be present in the expression. I want to write the...

I have the following 5 problems, please help me.

1.Let X have a Poisson distribution with parameter m. Show that
P(X is even)=(1+e2m)/2

2. A point is chosen at random on a circle of radius a,...

For which value of y(any real number),

(16+y)x2-4(1+y)x+(y2-128)/4 is a perfect square?

Please help me

How to find the singular solution of

y=px+sqrt(1+2p4) where p=dy/dx


or

how to eliminate p between

x=-4p3/sqrt(1+2p4) and y=(1-2p4)/sqrt(1+2p4)