STA644 GDB 1 Solution and discussion

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Course Title Non Parametric Statistics
Course Code STA644
Activity Assignment # 1
Submission Deadline Date: Wednesday, Nov 27, 2019
Time: 23:59 Hours (Midnight)

Instructions to attempt assignment:
• You can use/make a single table for all necessary computations.
• Use calculator for calculations.
• Write the complete formulas and all steps, wherever necessary.
• For writing symbols, use Math Type software. If you already did not download it, get it from here.
• Make your own attempt, any copy/past; cheating from other student/website may result in ZERO marks and/or assignment cancelation.

STA644(Non Parametric Statistics)
Assignment # 1
Researchers have conducted a survey of 1600 coffee drinkers asking how much coffee they drink in order to confirm previous studies. Previous studies have indicated that 72% of Americans drink coffee. The results of previous studies (Table #1) and the survey (Table #2) are below.
At α = 0.05, is there enough evidence to conclude that the distributions are the same?
Table # 1

Response	% of Coffee Drinkers (E)
2 cups per week	15%
1 cup per week	13%
1 cup per day	27%
2+ cups per day	45%

Table # 2

Response	Frequency (O)
2 cups per week	206
1 cup per week	193
1 cup per day	462
2+ cups per day	732

Hint: For E column in Table#1: E = 0.15 × 1600 = 240

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