By the calculating either as appropriate, find the stated confidence interval for x y
Question:
By the calculating either
as appropriate, find the stated confidence interval for µx – µy. You may assume that the data has come from an underlying normal distribution.
a.
90% confidence interval.
b.
90% confidence interval.
c.
90% confidence interval.
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a Given sx2 132 nx 40 x 831 sy2 146 ny 50 792 90 confidence interval To find the confidence interval for x y we can use the formula CI x t2 sqrtsp2 1n...View the full answer
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Related Book For 
Cambridge International AS & A Level Further Mathematics Coursebook
ISBN: 9781108403375
1st Edition
Authors: Lee Mckelvey, Martin Crozier
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