There are 8 uniforms at a fire station. their total weight is 538 pounds. about how many pounds does each uniform weigh? would you use paper and a pencil or mental math to solve the problem? explain. then solve. show your work. i know this is a stupid question but ..

If 8= 538 Ib. then take the (538) and divide that by 8. < 8 for the 8 uniforms.

Your math should look like this: 538/8= about 67 pounds.

Then do 67*8= 536. (You started at 532 Ib.) this is just 2 pounds off*

So, your answer should be *67* pounds.

*Use paper and a pencil! Sometimes doing mental math can be challenging with a problem like this. So use paper and a pencil, checking your answer wont hurt either!*

                                                         

The experimental probability is the number of two rolled divided by the total number of rolls...

12/(13+12+12+14+11+18)

12/80

3/20  (15%)

The theoretical is simply the number of twos on the die divided by the total number of numbers on the die...

There is 1 two and 6 total numbers so:

1/6  (16 2/3 %)

No one specified what the definition of "close" is, but I would say a 1 2/3 percent difference is significant if you are going to have many trials

100(3/20-1/6)/(1/6)

600(9-10)/60=-10%  

So the experimental probability will wind up predicting 10% less occurrences than the theoretical probability would.  That can be quite a difference for a large number of trials.  The larger the sample the closer you get to the theoretical probability.