
Chapter 10
PB
Statistical Inference: Hypothesis Testing for Single Populations
335
If the computed test statistic is between +1.96 and –1.96, the decision is to accept the null hypoth-
esis and if the computed test statistic is outside ±1.96, the decision is to reject the null hypothesis
(accept the alternative hypothesis).
Step 5: Collect the sample data
At this stage, a researcher collects the data. In this example, a sample of 200 respondents yields
a sample mean of `11,000.
Step 6: Analyse the data
The value of the sample statistic is calculated in this stage. From the example, n = 200,
=
11,000, s = 1200, and the hypothesized mean m = 10,000. ...