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A company that develops an automated customer service model is interested in knowing whether two versi Version A and Version B, will get different ratings from customers. Participants in a focus group are taken th samples from both versions, then take a survey to rate each version. A summary of the data obtained from study is given below. Assume ratings from the different surveys generally have the same standard deviation Version A Version B Mean 33.133 28.67 Observations 15 15 Pearson Correlation -0.325 Hypothesized Mean Difference df 0.00 14 t Stat -1.426 0.088 p= Ex: 1.234 P(T<=t) one-tal t Critical one-tail P(T<=t) two-tail t Critical two-tail -1.345 0.176 -1.761 -3 -2 -1 0 12 3. 95% Confidence Level t Ex: 1.234 t 3D n = Ex 9 Degrees of freedom: df = =DEx: 1,234 Point estimate for Version A: 11 Fimate for Version B: 2 Daint

A company that develops an automated customer service model is interested in knowing whether two versi Version A and Version B, will get different ratings from customers. Participants in a focus group are taken th samples from both versions, then take a survey to rate each version. A summary of the data obtained from study is given below. Assume ratings from the different surveys generally have the same standard deviation Version A Version B Mean 33.133 28.67 Observations 15 15 Pearson Correlation -0.325 Hypothesized Mean Difference df 0.00 14 t Stat -1.426 0.088 p= Ex: 1.234 P(T<=t) one-tal t Critical one-tail P(T<=t) two-tail t Critical two-tail -1.345 0.176 -1.761 -3 -2 -1 0 12 3. 95% Confidence Level t Ex: 1.234 t 3D n = Ex 9 Degrees of freedom: df = =DEx: 1,234 Point estimate for Version A: 11 Fimate for Version B: 2 Daint

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Start A company that develops an automated customer service model is interested in knowing whether two version Version A and Version B, will get different ratings from customers. Participants in a focus group are taken thro samples from both versions, then take a survey to rate each version. A summary of the data obtained from th study is given below Assume ratings from the different surveys generally have the same standard deviation Mean Observations Pearson Corelation Hypothesized Mean Difference df tStat Version A Version B 33.133 15 -0.325 0.00 14 नाथे26 28.67 15 0.088 p= Ex: 1.234 P(T<3t) one tail t Critical oneMail P(T<-t) two-tall I Critical two-tail Confidence Level ना.345 0.176 -1.761 95% t3 Ex 1.234 t%3D n=Ex:9 Degrees of freedom df Point estimate for Version A a Ex1234 Point estimate for Version B z2=
Transcribed Image Text:Start A company that develops an automated customer service model is interested in knowing whether two version Version A and Version B, will get different ratings from customers. Participants in a focus group are taken thro samples from both versions, then take a survey to rate each version. A summary of the data obtained from th study is given below Assume ratings from the different surveys generally have the same standard deviation Mean Observations Pearson Corelation Hypothesized Mean Difference df tStat Version A Version B 33.133 15 -0.325 0.00 14 नाथे26 28.67 15 0.088 p= Ex: 1.234 P(T<3t) one tail t Critical oneMail P(T<-t) two-tall I Critical two-tail Confidence Level ना.345 0.176 -1.761 95% t3 Ex 1.234 t%3D n=Ex:9 Degrees of freedom df Point estimate for Version A a Ex1234 Point estimate for Version B z2=
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