Question

A coin is tossed 2500 times. There is about a 68% chance that the percent of heads is in the range 50% plus or minus


0.5%
1%
1.5%
2%
2.5%

Answer 1

im thinking its 1%
if this is binomial distribution...
\[\sigma = \sqrt{np(1-p)} = \sqrt{2500*.5*.5} = 25\]
25 is 1% of 2500

Answer 2

yes ,it is right ans