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.

a) State the Null and Alternative hypothesis

b) Which test would you apply

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

c) Is there enough evidence to reject the Null hypothesis? Show calculation and e d) xplain your result.

Answer 1

Solution (a):

Null hypothesis:the distribution of amount of coffee Drunk is accurate

Alternate hypothesis: the distribution of amount of coffee is not accurate

Solution (b):

P value test will be applied

Solution (c):

P value <.05, reject hypothesis

There is no evidence that the distribution of the amount of coffee durnk is accurate

For calculation check the attached pictures