Q2. You collected 500 weeks of data (2500 days total). Based on that you find Tuesday's mean return is 12 bps. Mean return of all days is 2 bps. Stdev across all days is 100 bps. There is no noticeable difference b/w Tuesday stdev vs other weekdays' stdev. question c  Q2b. What is the z-score (t-stat) for the difference b/w Tuesday's mean return and other weekdays's mean return?   Q2c. What is the stdev for the difference above? What is the 95% Confidence interval?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Q2. You collected 500 weeks of data (2500 days total). Based on that you find Tuesday's mean return is 12 bps. Mean return of all days is 2 bps. Stdev across all days is 100 bps. There is no noticeable difference b/w Tuesday stdev vs other weekdays' stdev.

question c 

Q2b. What is the z-score (t-stat) for the difference b/w Tuesday's mean return and other weekdays's mean return?
 
Q2c. What is the stdev for the difference above? What is the 95% Confidence interval?

 

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