Business and Economic Statistics

Ryoto Kimura

Mr . Yoneoka

BUS 210

06 /12 /09

Business and Economic Statistics

1 . Systolic Blood Pressure for Women on the Pill

Graph the data set

Yes

The null hypothesis (Ho ) is stated as : The systolic blood pressure of women in birth control pills is equal to 140 mm

Alternative (H1 : The systolic blood pressure of women in birth control pills is not equal to 140 mm

Group of women not in pills is the control group . The influence of birth control pills can be easily identified

if it is tested to a sample compared to another sample , which is not given the pill

4 ) The solution is done using the Chi-square test for independence

Null hypothesis (Ho : Age and systolic blood pressure are independent

Alternative (H1 : Age and systolic blood pressure are related

Chi-square probability 6 .1047x10-151

2 . Auditor 's Judgment and Z score 2 ) Let A auditor 's going concern and Z Z score

P (A Z (0 .9 (0 .7 (0 .9 (0 .7 (0 .2 (0 .3 0 .63 /0 .69 0 .913

3

Percentage of

doubtful debts 3 6 9 12 15 Prior Judgment Weight 0 .2 0 .4 0 .2 0 .1 0 .1 1

4

State Proportion ,

Likelihood of

(Z0 (1-p )30

A 0 .03 0 .401

B 0 .06 0 .1563

C 0 .09 0 .0591

D 0 .12 0 .0216

E 0 .15 0 .0076

5

6

After the prior probability is introduced to the likelihood probability , the...