The Professor's Response

Hi professor, I am confused how to find the standard deviation in the problems in 4.1, number 7 i get that the mean is 1.5 but for the formula for standard deviation i am having trouble doing. Because the formula says the square root of NxPx (1-p)= the standard deviation. So what would I put for N? 4 each time? and for P what would I use?

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Professor McGukian

Hi Tufic,

I know you already answered this question for yourself, but I am going to post the solution below anyway because I had already finished the video by the time you wrote me saying not to worry about it.

 

Glad you figured it out on your own though,

Professor McGuckian

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