## Essentials of Statistics (5th Edition)

a) 52%=0.52, $0.52\cdot 1500=780 \ adults.$ b)$\frac{345}{15000}=0.23=23$% c)male:$\frac{727}{1500}=0.4847=48.47$%, female:$\frac{773}{1500}\approx0.5153=51.53$% d)We don't know, because we don't know how to find out whether it is statisitically significant. e)We don't know, because saying that something is signifcant is really subjective.