Stats Help for College-level Students

Regression? Chi-Square? ANOVA?

A survey concerning national health care was conducted by a nonprofit thinktank. Based on the data in the attached Table, determine whether there are regional preferences for type of health care. What are the managerial implications of your findings? I have no idea how to determine that. I am supposed to use one or more ...continues

ChiSquare? ANOVA? Regression?

Sporty Inc., a regional chain of sporting goods stores, wants to investigate why some of their stores in university towns have higher sales than other stores. Accordingly, they randomly sampled stores nationwide and collected information on yearly sales ($1000s), yearly advertising expenditures ($1000s), number of students at t ...continues

Optimization?

There are three manufacturing plants on the Schultz River: 1, 2, and 3. Each factory emits two types of pollutants, P1 and P2, into the river. If the waste from each factory is processed, the pollution in the river can be reduced. It costs $15 to process one ton of Factory 1 waste, and each ton processed reduces the amount o ...continues

Statistics

A soda distributor claims that a new display, featuring Lebron James will increase product sales in supermarkets by an average of 50 cases in a week. For a random sample of twenty supermarkets, the average sales increase was 41.3 cases, and varied across supermarkets by about 12.2 cases. Most imporatantly, what managerial co ...continues

Statistics

The manager of the 420-room SleepyTime hotel is trying to decide how many rooms to reserve for vacationers who book less than two weeks in advance. Demand for the "early booking" rooms is unlimited at the price of $240/day. Demand for the "late booking" rooms averages around 120 rooms/day, and varies by about 15 rooms/day. The r ...continues

Characteristic functions

I am having trouble with a few characteristic functions, as described in the attachment. Any help would be greatly appreciated. The attachment contains a definition of what I mean by a characteristic function. Thank you!

Chi-squared test of independence

I would be grateful if someone could explain to me how to use the chi-squared test to determine whether two sets of random variables generated using the random function on a computer are independent. In other words, could you generate two sets of random numbers (of length, say, 50) and set out the calculations in detail to de ...continues

Statistics

Norm Dickins the town pharmacist is interested in obtaining a loan to expand his business. He will get a better interest rate if he can reasonably demonstrate that his near-term monthly revenues will be between $10,000 and $15,000. He doesn't know the exact level of sales to expect over the next several months, but based on past ...continues

Statistics

You are a brand manager and have been running TV ads to market your product. However, you are considering running a series of spots that specifically targets wealthy consumers. The spots will cost $2K out of your $100K advertising budget. You estimate the market potential for wealthy consumers to be $250K. You hire a marketing r ...continues

Regression Test

Sporty Inc., a regional chain of sporting goods stores, wants to investigate why some of their stores in university towns have higher sales than other stores. Accordingly, they randomly sampled stores nationwide and collected information on yearly sales ($1000s), yearly advertising expenditures ($1000s), number of students at t ...continues