My dog has so many fleas,

They don't come off with ease.

As for shampoo, I've tried many types

My current one is called Bubble Hype,

Which only kills 25% of the fleas,

I am not very pleased.

I've used all kinds of soap,

I had almost given up hope

Until one day I saw

An ad that put me in awe.

A shampoo used for dogs

Called GOOD ENOUGH to Clean a Hog

So I gave Fido a bath

And after doing the math

His number of fleas

Started dropping by 3's!

Before his shampoo I counted 40 bugs

Way too many for a pug

So I opened the bottle

Gave him a bath at full throttle

At the end of his bath,

I redid the math

And the new shampoo had killed 17 fleas.

So now I was pleased.

Now it is time for you to have some fun

With the level of significance being .01,

You must help me figure out

Use the new shampoo or go without?