Three male and three female students recorded the number of times they used a credit card in
Question:
Three male and three female students recorded the number of times they used a credit card in one week.
(a) Calculate s2pooled.
(b) Give an estimate of the common standard deviation for the number of uses.
(c) Evaluate the t statistic for testing equality of the two population mean number of uses.
(d) Use software to confirm your value of t.
R: t.test(x,y,var.equal=TRUE) after x=c(9,4,5) and y=c(2,6,4)
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a b c The t statistic is d Using R the ...View the full answer
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Related Book For 
Statistics Principles And Methods
ISBN: 9781119497110
8th Edition
Authors: Richard A. Johnson, Gouri K. Bhattacharyya
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