{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

quiz7

# quiz7 - binomial is discrete For Questions 4 and 5 consider...

This preview shows page 1. Sign up to view the full content.

Quiz 7. October 27, 2010 Seat # _________ Name: _________________________ Closed book and notes. No calculator. For Questions 1–3, recall the following three statements. A binomial distribution concerns the number of successes in n Bernoulli trials, when p is the probability of success. A hypergeometric distribution concerns the number of successes in n draws from a population of N items, when K items of the population are successes. The binomial pmf is a good approximation to the hypergeometric pmf when N is "large" and p = K / N . 1. (2 pt) T F When n = 1, the approximation is exact. 2. (2 pt) T F When n = N , the approximation is exact. 3. (2 pt) T F The normal distribution (that is, the bell curve) cannot be used to approximate the binomial distribution, because the normal is continuous but the
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: binomial is discrete. For Questions 4 and 5, consider Problem 4–86. The number of stork sightings on a route in South Carolina follows a Poisson process with a mean of 1.3 per year. Let X denote the time until a stork sighting. 4. (2 pt) Determine the value of E( X ). 5. (2 pt) Suppose that a bird watching has been watching for 2 years, with no sighting. Determine the conditional expected value until the next sighting. That is, determine the value of E( X | X > 2). ______________________________________________________________________ Write on the back any concerns about the weekly quizzes or the course in general. IE 230 – Page 1 of 1 – Schmeiser...
View Full Document

{[ snackBarMessage ]}