The most difficult chapter yet... number 9

Well the most difficult part about this chapter is getting the formulas correct. I spent at least 2 1/2 hours on the homework because after i finished all of the work, I would go back and my answer was incorrect. It took me forever to find out what I did wrong. The formulas are lenghty, but I understand their applications. I don't think there is anything too difficult to understand, it is just simply knowing which formula and putting the numbers in correctly.

Worksheets 38 and 39

What do foolish shoppers do at christmas?
They buy this year's presents with next year's money.

One son went to sea. The other became Vice President of the U.S. What happened to both of them?
Neither has been heard from since.

Chapter 8

I understand the formulas, I just do not understand the purpose behind them. I also still don't get WHEN we use a T-test as opposed to a Z-test?

Worksheets 36 and 37

What did the optician's daughter do at the party?
She made a spectacle of herself.

Why did the psychiatrist work in a watch repair shop?
To psychoanalyze all the cuckoo clocks.

I forgot my reading of Chapter 7
Yes this chapter was very difficult. I started to get confused by all of the different symbols and what they meant. I had to go back and re-read them. Computing the confidence intervals became easy after I looked back and re-read how to compute each part step by step.

Worksheets 33, 34

Why did the elderly man bur his money?

Because he couldn't take it with him, he sent it ahead.

What do you call a person in a plane when all the engines go dead?

Sky Diver!