Question

9) Researchers have conducted a survey of 1600 coffee drinkers asking how much coffee they drink in order to confirm previous studies which indicated that 72% of Americans drink coffee. The results of previous studies (left column) and the survey (right column) are show. Response % of Coffee Drinkers Expected frequency Observed frequency 2 cups per week 15% 206 1 cup per week 13% 193 1 cup per day 27% 462 2+ cups per day 45% 739

a) State the Null and Alternative hypothesis

b) Which test would you apply

c) Is there enough evidence to reject the Null hypothesis? Show calculation and e

d) explain your result.

Answer 1