Homework Answers
Given that confidence interval is (4.4 ,5.4)
i.e lower limit= 4.4
upper limit= 5.4
i) estimated margin of error=
(upper limit-lower limit)/2= (5.4-4.4)/2= 0.5
Answer is 0.5
ii) the sample mean is =
(Upper limit+lower limit)/2 = (4.4+5.4)/2
Answer is 4.9
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