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Quiz Questions in STAT 2200: Hypothesis Testing for Retail Sales and Facebook Friends, Quizzes of Data Analysis & Statistical Methods

University of Missouri (MU) - ColumbiaData Analysis & Statistical Methods

Two hypothesis testing problems from a statistics quiz in stat 2200. The first problem deals with testing whether a retail store has twice as many customers in winter compared to other seasons using given data. The second problem involves testing if there is a relationship between gender and the number of friends on facebook based on a sample of 50 people.

Typology: Quizzes

Pre 2010

Uploaded on 08/18/2009

koofers-user-x96
koofers-user-x96 🇺🇸

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STAT 2200 QUIZ #4T. DeWees
Name: Score:
Show ALL work for ALL problems.
1. ( 10 points ) A retail store claims that it has twice as many customers in the winter than in any other season.
Assuming that the numbers of customers of the other seasons are equivalent, do the following data support the
store’s claim? Use the α= 0.01 level of significance.
Spring Summer Fall Winter
1950 1800 1700 3500
1
pf2

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Download Quiz Questions in STAT 2200: Hypothesis Testing for Retail Sales and Facebook Friends and more Quizzes Data Analysis & Statistical Methods in PDF only on Docsity!

STAT 2200 QUIZ # 4 T. DeWees

Name: Score:

Show ALL work for ALL problems.

  1. ( 10 points ) A retail store claims that it has twice as many customers in the winter than in any other season. Assuming that the numbers of customers of the other seasons are equivalent, do the following data support the store’s claim? Use the α = 0.01 level of significance.

Spring Summer Fall Winter 1950 1800 1700 3500

  1. ( 10 points ) Many people believe that there is a strong relationship between the gender and the number of friends people have on Facebook. I sampled 50 random people (friends... not random stalkings) on Facebook and found the following results. Test at the α = 0.1 level to see if their is a relationship between gender and number of friends on Facebook.

< 150 151 − 300 > 300 Male 5 9 5

Female 16 10 5