please help with binomial problem

Statistics
Tutor: None Selected Time limit: 1 Day

How does p = 0.5?

Another tutor wrote that p = 0.5, but I don't understand why. Can someone please explain!

Apr 26th, 2015

When the value of the data equals the MEAN of the sample then the probability is exactly ONE HALF which is 1/2 = 0.5

Hope that helps.

Apr 26th, 2015

Screen Shot 2015-04-26 at 4.15.57 PM.png 
this was the original problem, I'm not sure why it didn't attach.

Apr 26th, 2015

Screen Shot 2015-04-26 at 4.15.57 PM.png 
this was the original problem, I'm not sure why it didn't attach.

Apr 26th, 2015

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Apr 26th, 2015
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Apr 26th, 2015
Dec 10th, 2016
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