An online clothing retailer is testing a new e-mail campaign by sending one version of the e-mail with the word "free" in the subject line (version A) to a group of 1,500 customers and another version of the e-mail with word "discount" in the subject line (version B) to a different group of 1500 customers. After tracking the responses to the two versions of the e-mail advertising, the retailer finds that 150 responded to version A and 180 responded to version B. At 0.01 significance level, can it be concluded that the response rate for version B is higher than the response rate to version A Determine which of the following formulations of the hypotheses is appropriate and enter the corresponding number in the answer text box. Index "a" refers to the population of the customers who respond to version A and index "b" refers to the population of customers who are responsive to version B. Identify and enter the number corresponding to the most appropriate formulation for the hypotheses. For example if formulation number 3 is the most appropriate formulation for this problem then enter "3" in the answer text box. . Họ: Pb - Pa20 Ha: Pb - Pa<0 I Họ: Pb- Pa <0 Ha: Ph- Pa>0 . Họ: O -Oa =0 Ha: O - Oa#0 · Họ: Oz - Og20 Ha: O -Da <0 1. Họ: Op -0a< 0 Ha: Oz - Og>0 1. Họ: Hb - Ha 0 Ha: Hb - Ha < 0
An online clothing retailer is testing a new e-mail campaign by sending one version of the e-mail with the word "free" in the subject line (version A) to a group of 1,500 customers and another version of the e-mail with word "discount" in the subject line (version B) to a different group of 1500 customers. After tracking the responses to the two versions of the e-mail advertising, the retailer finds that 150 responded to version A and 180 responded to version B. At 0.01 significance level, can it be concluded that the response rate for version B is higher than the response rate to version A Determine which of the following formulations of the hypotheses is appropriate and enter the corresponding number in the answer text box. Index "a" refers to the population of the customers who respond to version A and index "b" refers to the population of customers who are responsive to version B. Identify and enter the number corresponding to the most appropriate formulation for the hypotheses. For example if formulation number 3 is the most appropriate formulation for this problem then enter "3" in the answer text box. . Họ: Pb - Pa20 Ha: Pb - Pa<0 I Họ: Pb- Pa <0 Ha: Ph- Pa>0 . Họ: O -Oa =0 Ha: O - Oa#0 · Họ: Oz - Og20 Ha: O -Da <0 1. Họ: Op -0a< 0 Ha: Oz - Og>0 1. Họ: Hb - Ha 0 Ha: Hb - Ha < 0
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 28EQ
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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