{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture9

# lecture9 - Homework problem set 2 • 1 The probability...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Homework problem set 2 * • # 1. The probability distribution shown here describes a population of measure- ments that can assume values of 0,2,4, and 6, each of which occurs with the same rel- ative frequency: x 0 2 4 6 p ( x ) 1 4 1 4 1 4 1 4 a. List all the different samples of n = 2 measurements that can be selected from this population. b. Calculate the mean of each different sample listed in part a . c. If a sample of n = 12 measurements is randomly selected from the population, what is the probability that a specific sam- ple will be selected? * updated on Feb.11 1 • Additional four problems: P. 135, # 3.46; P. 232, # 5.10; P. 246, # 5.25; P. 248, # 5.44. (The numbering here is following the 11th edition.) • In the 10th edition, the corresponding prob- lems are: P. 143, # 3.46; P. 242, # 5.10; P. 258, # 5.23; P. 260, # 5.42. 2 Point estimator • Recall: sample statistic and population pa- rameter. The link is something called in- ference that statisticians tend to carry out. • Definition: A Point estimator of a popu- lation parameter is a rule or formula which tells us how to use the sample data to cal- culate a single number that can be used as an estimate of the population parameter. • Examples: the sample mean ¯ x is a point estimator of the population mean μ ; sam- ple variance s 2 is a point estimator of the population variance σ 2 ....
View Full Document

{[ snackBarMessage ]}

### Page1 / 12

lecture9 - Homework problem set 2 • 1 The probability...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online