At a major credit card bank, the percentages of people who historically apply for the Silver, Gold and Platinum cards are 60%, 30% and 10% respectively In a recent sample of customers responding to a promotion, of 200 customers, 104 applied for Siver, 52 Gold and 44 for Platinum. Is there evidence to suggest that the percentages for this promotion may be different from the historical proportions? a) What is the expected number of customers applying for each type of card in this sample if the historical proportions are still true? b) Compute the7 statistic. c) How many degrees of freedom does the y statistic have? a) The expected number of silver card customers is 120 (Type an integer or a decimal ) The expected number of gold card customers is 60 (Type an integer or a decimal) The expected number of platinum card customers is (Type an integer or a decimal.)
At a major credit card bank, the percentages of people who historically apply for the Silver, Gold and Platinum cards are 60%, 30% and 10% respectively In a recent sample of customers responding to a promotion, of 200 customers, 104 applied for Siver, 52 Gold and 44 for Platinum. Is there evidence to suggest that the percentages for this promotion may be different from the historical proportions? a) What is the expected number of customers applying for each type of card in this sample if the historical proportions are still true? b) Compute the7 statistic. c) How many degrees of freedom does the y statistic have? a) The expected number of silver card customers is 120 (Type an integer or a decimal ) The expected number of gold card customers is 60 (Type an integer or a decimal) The expected number of platinum card customers is (Type an integer or a decimal.)
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Transcribed Image Text:At a major credit card bank, the percentages of people who historically apply for the Silver, Gold and Platinum cards are 60%, 30% and 10% respectively. In a recent sample of customers responding to a promotion, of 200 customers, 104 applied for Silver, 52 for
Gold and 44 for Platinum. Is there evidence to suggest that the percentages for this promotion may be different from the historical proportions?
a) What is the expected number of customers applying for each type of card in this sample if the historical proportions are still true?
b) Compute the x statistic.
c) How many degrees of freedom does the x statistic have?
a) The expected number of silver card customers is 120
(Type an integer or a decimal.)
The expected number of gold card customers is 60
(Type an integer or a decimal.)
The expected number of platinum card customers is
(Type an integer or a decimal.)
Vi
(1,1)
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