Introduction to a variety of useful statistical ideas and techniques - Improving the User Experience through Practical Data Analytics - page 35

H0: μ ≤ 4.1 (mean satisfaction of new design is no higher than 4.1, the mean of
current design).
H1: μ > 4.1 (mean satisfaction of new design is higher than 4.1, the mean of cur-
rent design).
Suppose that the data values ( n = 10) are,
5
4
5
5
3
4
5
5
4
5
The 10 data values have a mean of 4.50. Is that enough above 4.10 to reject H0?
Let's do the hypothesis test in SPSS and answer the question very quickly: 5
Type (or copy and paste) the data into SPSS, as depicted in Figure 1.20 .
FIGURE 1.20
Data entered into SPSS.
5 Refer to Chapter 2 to see how to perform the same test in Excel.