Figure 2.22 shows a similar study to that in Task 9, but the means were 10 (singing)

Question:

Figure 2.22 shows a similar study to that in Task 9, but the means were 10 (singing) and 10.01 (conversation), the standard deviations in both groups were 3 and each group contained 1 million people. Compute the values of the confidence intervals displayed in the figure.

image text in transcribed