Wednesday

October 22, 2014

October 22, 2014

Total # Posts: 7

**statistics**

A sample of 100 iron bars is said to be drawn from a large number of bars. Whose lengths are normally distributed with mean 4 feet and S.D 0.6ft. If the sample mean is 4.2 ft, can the sample be regarded as a truly random sample?
*July 17, 2013*

**maths**

Find the sum of the squares of the three solutions of the equation x3+3x2−7x+1=0.
*June 23, 2013*

**maths**

f is a function on the positive reals that satisfies f(x2+1)1x√=x6x, what is the value of f(82)?
*June 23, 2013*

**phyisics**

If approximately 70% of the Earth's surface is covered with water, what is the order of magnitude for the number of raindrops in the world's oceans?
*June 22, 2013*

**sharma**

If you watch little kids try to open doors, they will often just push anywhere on the door, rather than on the edge like adults do. This is because they don't understand that it's easier to open a door if you push on the edge. But how much easier? Consider the ...
*June 14, 2013*

**math**

find average of first 52 consecutive numbers
*August 21, 2011*

**physics**

i have no friends
*February 18, 2011*

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