What do you understand by the terms - Level of Significance and Power? Discuss their relevance in sample size determination.
The significance level is the criterion used for rejecting the null hypothesis. The significance level is used in hypothesis testing as follows: First, the difference between the results of the experiment and the null hypothesis is determined. Then, assuming the null hypothesis is true, the probability of a difference that large or larger is computed. Finally, this probability is compared to the significance level. If the probability is less than or equal to the significance level, then the null hypothesis is rejected and the outcome is said to be statistically significant.
The probability of correctly rejecting a null hypothesis
_____ _________ _______ _________ ________ ______ ______ ____ ________ __________.
__________ __________ _________ ________ _________.
___ ___ _______ __________ _________ _____ _________.
______ _______ __________ ______ ___ _______.
____ ______ __________ ____ ________ __________.
____ ______ ______ ___ _____ _______ ______ __________ ____ _________ ___.
_____ ____ ___ ____ ___.
___ _______ ________ ___ _____ _____ ______ ________ ______.
____ _____ ________ ______ _________ ____ ______ ________ ______.
_________ ____ ___ _______ __________ _____ ______ ________ ____ __________ ___ __________.
_______ ___ _________ _______ _______ _________ ________ _____ _____.
___ _______ ____ _________ _______ ___.
___ ___ __________ ___ ______ ___.
_____ _________ _________ ___ ________ __________ __________ ________.
_____ ____ ____ ____ ___ __________ _________ ___ ______ _______ ____.
_______ ___ ________ ____ _______ _______ _______ ____ ________ ____ _____.
_____ ___ ________ _________ ______ __________ ___ ______ _______ _______.
_____ __________ ________ ____ _____.
__________ __________ __________ _____ _________ _____ ___ _____ ___ _______ _____ _________.
__________ ____ _____ ________ __________ ______.
___ ___ _____ __________ ____ ____ ______ __________ _______ _______ _____.
_____ _________ ________ _______ _____ ___ __________ __________ ______ _____ _________.
_________ ________ ___ _________ __________ _____ __________ ___.
_________ ___ ________ _______ _______ _________ ____ _____ ______ ______ ___ ____.
______ ____ ________ ___ ______ ____ _____.
________ _______ _______ ________ ______ _________ ___ __________ ____ ________ __________ _____.
_________ ___ ______ _____ ___ _____.
______ _____ ___ _______ _______ _____ _____ ________.
__________ __________ _____ ________ _______ ______ ____.
_________ _____ ___ ______ ____ __________ _________ ______.
___.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
✓ Unlock up to 60% of the answer
✓ No payment required
Beta error
Explain the concept of normal probability distribution.
Validity
Differentiate between the following research designs, giving appropriate examples.
I) Analytic study
- Descriptive study
List the various types of tools available for data collection while undertaking research.
Quasi experimental design
The following table shows the number of males and females who arc anemic and non-anemic in a research study.
Test whether there is a relationship between anemia and sex status in the population under study.
Test at 05 level of significance