METHODS OF DATA ANALYSIS
DECISION MAKING WITH HYPOTHESIS TESTING
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The mean of a sample is equal to 80.
|
|
|
The mean of a population is equal to 80
|
|
|
The mean of a population is not equal to 80.
|
|
|
The mean of a population is greater than 80.
|
Detailed explanation-1: -In a test of hypothesis, the null hypothesis is that the population mean is equal to 80 and the alternative hypothesis is that the population mean is less than 80.
Detailed explanation-2: -The null hypothesis assumes that any kind of difference between the chosen characteristics that you see in a set of data is due to chance. For example, if the expected earnings for the gambling game are truly equal to zero, then any difference between the average earnings in the data and zero is due to chance.
Detailed explanation-3: -The null hypothesis states that there is no relationship between two population parameters, i.e., an independent variable and a dependent variable. If the hypothesis shows a relationship between the two parameters, the outcome could be due to an experimental or sampling error.