Find the length of the missing side Drag and drop the length of the missing side into the box to complete
2 answers:
This is a right triangle so we can use the Pythagorean Theorem to answer. The hypotenuse will always be C and the longest side and then A or B can be any of the legs. As you can see I tested out each of the options to figure out which one would be the best answer. You can see the process in the pictures. I color coded each section so that you have an idea of what each looks like when worked out. Let me know if you need more clarification! :)
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I have an expression
floating around in my head; let's see if it makes sense.
The variance of binary valued random variable b that comes up 1 with probability p (so has mean p) is
That's for an individual sample. For the observed average we divide by n, and for the standard deviation we take the square root:
Plugging in the numbers,
One standard deviation of the average is almost 2% so a 27% outcome was 3/1.9 = 1.6 standard deviations from the mean, corresponding to a two sided probability of a bit bigger than 10% of happening by chance.
So this is borderline suspect; most surveys will include a two sigma margin of error, say plus or minus 4 percent here, and the results were within those bounds.