You pick 6 crayfish and 4 are female and 2 are male what is your hypothesis for these disproportionate numbers

Answer 1

something to the effect that there are more females because they do lay the eggs. males can spread the sperm to multiple females but the females have to incubate the eggs untill they are ready to be layed. the incubation is a longer process which would then require more females.

Answer 2

My hypothesis is the null hypothesis that there are equal numbers of males and females; checking a chi-square calculator like http://schnoodles.com/cgi-bin/web_chi.cgi I see that a 4:2 distribution is not significantly different from a 100:100.

Answer 3

There are twice as many females than males in the pond or wherever you picked them.... those 6 crayfish represent them all.

Answer 4

it is probably because the males (speaking in generalities in the animal kingdom as a whole) fight for food, females, and territory. Some species fight to the death. You should look into that theory for crusteceans (although freshwater, isn't that what they are??) and see -- what does it say about other similar species? Do the males "fight to the death"? that's my best guess.....1/2 the males die in battle -- survival of the fittest.

Answer 5

A few males and a bunch of females = lots of crayfish.
Sounds like a good strategy from an evolutionary standpoint.

Answer 6

You can't make one. You need a larger sample size.(i.e. 1000 crayfish instead of 10)

Answer 7

that you pick to few crayfishes to make any hypothesis at all.

Answer 8

you suck at picking crayfish

Answer 9

Lucky males...

Answer 10

luck (or lack thereof, depending on what you are hoping for).