{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

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

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

View Full Document Right Arrow Icon
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
Background image of page 1
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 ]}