17) PLANNING RISKS AND CONTINGENCIES
These are the possible risks that may be included with
regards to the testing process:
Utilization of resources
-The resources should be efficiently organize and allocate
personnel as well as equipment for the project

Tests on Mean & Proportion:
One Sample
Population Mean: Known or 30
Population Mean: Unknown or < 30
Population Proportion
FORMULAS
Hypothesis Test on
Population Mean: Known or 30
Population Mean: Unknown or < 30
Population Proportion
Where: = standard er

HYPOTHESIS TESTING
HYPOTHESIS FORMULATION
5-STEP SOLUTION
Hypothesis
Hypothesis is an assumption or assertion about the population
parameter mean () or proportion ().
Examples:
1. The average weight of new born babies in PGH is 5 lbs.
2. Most of the new

Two Sample Tests on
Means & Proportions
Difference between Two Population Means: 1 , 2 Known
Difference between Two Population Means:1 , 2 Unknown
Difference between Two Population Means: Matched Samples
Difference between Two Population Proportions
Confi

Tests For Variance
Hypothesis Test about Population Variance
Hypothesis Test about Two Population Variances
Recall
Variance is a measurement of the spread between numbers in a data
set. The variance measures how far each number in the set is from
the mea