Stats Help for College-level Students

Hypothesis testing.

How do I decide on formulas for Ho hypothesis? The manager of a paint supply store wants to determine whether the amount of paint contained in 1 gallon cans purchased from a nationally known manufacturer actually averages 1 gallon. It is known from the manufacturer's specifications that the standard deviation of the amount ...continues

Hypothesis

The quality-control manager at a lightbulb factory needs to determine whether the mean life of a large shipment of lightbulbs is equal to the specified value of 375 hours. The process standard deviation is known to be 100 hours. A random sample of 64 lightbulbs indicates a sample mean life of 350 hours a. State the null and alt ...continues

Statistics Multiple choice

MOVED TO STATISTICS BASED ON OTA FEEDBACK. In the following multiple-choice questions, circle the correct answer and give 1-3 line defense for your choice:

For the following set of data determine whether it is appropriate to perform Factor analysis (check all necessary statistical tests, and residuals.)

For the following set of data determine whether it is appropriate to perform Factor analysis (check all necessary statistical tests, and residuals.)

statistics

The time taken to install bumpers on cars passing through a particular assembly line is normally distributed with mean time u=2.00 minutes and standard deviation =36 minutes. A sample on n=100 is obtained and a mean bumper installation time X-bar will be calculated. 1. Find the value of standard deviation X bar. Determine th ...continues

Game theory question on pricing

11. Coca-Cola and Pepsi Co are the leading competitors in the market for cola products. In 1960 Coca Cola introduced Sprite, which today is the worldwide leader in the lemon-lime soft drink market and ranks 4th among all soft drinks worldwide. Prior to 1999, PepsiCo did not have a product that competed directly against Sprite ...continues

Statistics

Statistics questions

Gordon-Poker

These are two questions that I cannot seem to figure out by looking at the text. I'm not sure how to handle the probability involving compound variables (i.e. 5 cards selected out of 52, and 3 of four kings, and 2 of four queens). I am also not sure how to figure probabilities with "at least" and "at most" terminology. They ...continues

Probability

1. How many ways are there to choose 5 items (with repetition) from among 7 varieties? Explain, as precisely as possible, why we should not factor out by the number of arrangements of the 5 choices. ( Don't prove that the answer is wrong-we already did that- explain why it's wrong, i.e., why we shouldn't factor out by r! ...continues

Statistics

Subject: A Decision Tree Details: An electric power trading company has an option to buy 1,000,000 terawatts of electricity from a producer for $10 per terawatt. Other electric power trading companies have received this option and the company knows a decision must be made quickly. The company estimates it can sell the electric ...continues