# statII - M anageri al S tatistics Assignment 1 Heeba...

This preview shows pages 1–6. Sign up to view the full content.

Manageri al Statistics. Assignment 1 Heeba Mohammed Al- Qahtani 200752619

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

View Full Document
QU university
Exercise 11.13: A. P-value(X>50)= P ( - /√ > - /√ ) X µσ n 52 505 9 =P (Z> 1.2) =1-0.8849 = 0.1151 B. P-value(X>50)= P ( - /√ > - /√ ) X µσ n 52 505 25 = P (Z>2.00) =1-0.9772 = 0.0228 C. P-value(X>50)= P ( - /√ > - /√ ) X µσ n 52 505 100 = P (Z>4.00) isn’t in the table. = 0 D. When we increase the sample size, we reduce probability of error one. Also, it will help us to make

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

View Full Document
batter decision and make less error. In other words, the test statistic increase and the p-value decrease. Exercise 11.14: A. P-value(X<200)= P ( - /√ > - /√ ) X µσ n 190 20050 9 =P (Z<-0.06) = .2743 B. P-value(X<200)= P ( - /√ > - /√ ) X µσ n 190 20030 9 = P (Z< -1.00) = .1587 C. P-value(X<200)= P ( - /√ > - /√ ) X µσ n 190 20010 9 = P (Z< -3.00) = .0013
When we decrease the test statistic, p-value decrease as well. Exercise 11.15:

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.

## This note was uploaded on 10/12/2010 for the course BUSINESS 200852699 taught by Professor Huda during the Spring '10 term at Qatar University.

### Page1 / 9

statII - M anageri al S tatistics Assignment 1 Heeba...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online