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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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