2. Answer the following questions for each statement: Is this a descriptive or i
ID: 3320880 • Letter: 2
Question
2. Answer the following questions for each statement: Is this a descriptive or inferential statistics? What is the population? What is the sample? What is the variable of interest? A) Based on data collected from 300 undergraduates, the Mitchell Memorial Library at Mississippi State determined thpt 67% of college students have pulled at least 3 all- night study sessions. B) Phil Dunphy gathered data on every house sold for the past 30 years in Los Angeles and determined that houses sold during those 30 years in Los Angeles were on the market for an average of four and a half months. C) During a recent promotion, Starbuck's used data collected from rewards cardholders to determine that when they offer a 20% discount on the second beverage purchased, that customers purchased an average of 16.37 more beverages per month than usual. D) After surveying 126 people working in the food service industry, one of the top selling lifestyle magazines found that 76% of food service workers think that at least 50% of the human population are actually just lizard people in disguise. 8 0Explanation / Answer
2 ) A ) This is an inferential statistics .
Population : The undergraduates who attended the Mitchell Memorial Library at Mississippi .
Sample : 300 undergraduates who attended the Mitchell Memorial Library at Mississippi .
Variable of interest : Number of undergraduates who have pulled atleast 3 all night study sessions .
B ) This is a descriptive statistics .
Population : Every house sold for past 30 years in Los Angeles .
Sample : There is no sample .
Variable of interest : Time for which the houses were on the market before they were sold .
C ) This is descriptive statistics .
Population : All reward cardholders of Starbuck's .
Sample : It is a census , not a sample survey .
Variable of interest : Number of extra beverages purchased per month than usual when a 20 % discount is offered on second beverages purchased .
D ) This is inferential statistics .
Population : People working in the food service industry .
Sample : 126 people working in the food service industry .
Variable of interest : Number of food service workers who think that atleast 50 % of the human population are actually just lizard people in disguise .
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