Sunday

April 20, 2014

April 20, 2014

Total # Posts: 8

**linear/exponential**

This question involves the half-life formula. In this exercise, we are to give a half-life for an exponentially decaying quantity. Need answer to the following: The half-life of a drug in the bloodstream is 4 hours. By what factor does the concentration of the drug decrease in...

**cultural diversity**

The idea that there is an "average American perception" discredits too many Americans. Americans of all nationalities express opinions that vary widely because of our democratic system. As with every country in our universe, one will encounter those who may be racist...

**Statistics**

For some reason I didn't get the entire questions submitted on the previous email. I really need help with the last part - the part about the crusty old professor. THANKS. K Students in a very large first year college class at a prestigious college were asked how many minu...

**Statistics**

How much more would you expect to pay for a home that has four bedrooms than for a home that has three bedrooms? Here are some data for West Lafayette, Indiana. These are the selling prices (in dollars) that the owners of the homes are asking: Table 1: Four- Bedroom Houses

**Statistics**

A recent survey of students on the question “Do you think the United States should retain or abolish the use of the penny as a coin of currency?” showed that 20 of the 28 students thought that the United States should retain the penny. Consider this class as a random...

**Statistics**

Why would one not be surprised that when students were asked how many minutes they studied on a typical weeknight, most responses are in multiples of ten minutes???? This question seems to be more about psychology than statistics. Most people don't recall study time interv...

**Statistics**

I have a problem I need some help on. I answered some. For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies with mean 2.2 and standard deveiation 1.4. 1. Could the exact distributin of the numbe...

**Statistics**

I have a problem I need some help on. I have answered parts. Any guidance would be appreciated. K For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies with mean 2.2 and standard deveiation 1.4. ...

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