Refer to the Passage Below to Answer the Questions That

question 128

Essay

Refer to the passage below to answer the questions that follow.
Dell Computers dramatically increased its consumer advertising,resulting in Dell becoming the top-selling personal computer brand.Consumers could purchase a Dell computer only directly from Dell,either by calling the toll-free number or visiting Dell's website.One of Dell's popular television commercials included Steve,a young man who would usually say,"Dude,you're gettin' a Dell." Audiences really liked Steve and the ads he appeared in,and in fact,that's when Dell's sales started to skyrocket.However,Dell has stopped that campaign and has moved on to others.
-It seems like every week Dell has a special offer for consumers.For example,one offer included a free printer and digital camera with the purchase of a desktop computer.How could marketers evaluate the effectiveness of sales promotion offers such as this?

---

Definitions:

Confidence Intervals

A stretch of values, from sample data analysis, that is envisaged to hold the value of an undefined population characteristic.

Outliers

Observations in a data set that are significantly distant from the other observations, potentially indicating variability in measurement or experimental errors.

Confidence Intervals

A range of values, derived from sample statistics, that is believed to contain the true population parameter with a certain level of confidence.

Unknown Parameters

Quantities in a statistical model that are not known a priori but are estimated from data.