Question: Figure 2.21 shows two experiments that looked at the effect of singing versus conversation on how much time a woman would spend with a man.

Figure 2.21 shows two experiments that looked at the effect of singing versus conversation on how much time a woman would spend with a man. In both experiments the means were 10 (singing) and 12 (conversation), the standard deviations in all groups were 3, but the group sizes were 10 per group in the first experiment and 100 per group in the second. Compute the values of the confidence intervals displayed in the figure.

Time together (mins) 15 14 13 12 11 10 9 BIECTORBR6543NT SELF

Time together (mins) 15 14 13 12 11 10 9 BIECTORBR6543NT SELF TEST Compare the graphs in Figure 2.21. What effect does the difference in sample size have? Why do you think it has this effect? Sample size = 10 Sample size = 100 Conversation Singing Conversation Singing Sample

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