$0\le p\le 0{,}2$0\le p\le 0{,}2

$0,2\le p\le0{,}35$0,2\le p\le0{,}35

$0,35<p\le0{,}5$0,35<p\le0{,}5

$0{,}5<p\le1$0{,}5<p\le1