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Jump to level 1 A company that develops an automated customer service model is interested in knowing whether two versions, Version A and Version B, will get different ratings from customers. Participants in a focus group are taken through samples from both versions, then take a survey to rate each version. A summary of the data obtained from the study is given below. Assume ratings from the different surveys generally have the same standard deviation. Mean Observations Pearson Correlation Hypothesized Mean Difference df t Stat P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level Version A Version B 39.333 34.4 15 15 -0.011 n = Ex: 9 0 14 -2.086 0.028 -2.624 0.056 -2.977 99% Degrees of freedom: df Point estimate for Version A: A = Ex: 1.234 Point estimate for Version B: x B = 1 -3 -2 -1 t = Ex: 1.234 0 1 t = p= 2 Ex: 1.2343 3 2

Jump to level 1 A company that develops an automated customer service model is interested in knowing whether two versions, Version A and Version B, will get different ratings from customers. Participants in a focus group are taken through samples from both versions, then take a survey to rate each version. A summary of the data obtained from the study is given below. Assume ratings from the different surveys generally have the same standard deviation. Mean Observations Pearson Correlation Hypothesized Mean Difference df t Stat P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level Version A Version B 39.333 34.4 15 15 -0.011 n = Ex: 9 0 14 -2.086 0.028 -2.624 0.056 -2.977 99% Degrees of freedom: df Point estimate for Version A: A = Ex: 1.234 Point estimate for Version B: x B = 1 -3 -2 -1 t = Ex: 1.234 0 1 t = p= 2 Ex: 1.2343 3 2

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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Jump to level 1 A company that develops an automated customer service model is interested in knowing whether two versions, Version A and Version B, will get different ratings from customers. Participants in a focus group are taken through samples from both versions, then take a survey to rate each version. A summary of the data obtained from the study is given below. Assume ratings from the different surveys generally have the same standard deviation. Mean Observations Pearson Correlation Hypothesized Mean Difference df t Stat P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level n = Ex: 9 Version A Version B 39.333 34.4 15 15 -0.011 0 14 -2.086 0.028 -2.624 0.056 -2.977 99% Degrees of freedom: df = Point estimate for Version A: XA Point estimate for Version B: B 1 = Ex: 1.234 = t -3 -2 -1 = Ex: 1.234 0 1 t = p= Ex: 1.234 2 3 2
Transcribed Image Text:Jump to level 1 A company that develops an automated customer service model is interested in knowing whether two versions, Version A and Version B, will get different ratings from customers. Participants in a focus group are taken through samples from both versions, then take a survey to rate each version. A summary of the data obtained from the study is given below. Assume ratings from the different surveys generally have the same standard deviation. Mean Observations Pearson Correlation Hypothesized Mean Difference df t Stat P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level n = Ex: 9 Version A Version B 39.333 34.4 15 15 -0.011 0 14 -2.086 0.028 -2.624 0.056 -2.977 99% Degrees of freedom: df = Point estimate for Version A: XA Point estimate for Version B: B 1 = Ex: 1.234 = t -3 -2 -1 = Ex: 1.234 0 1 t = p= Ex: 1.234 2 3 2
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