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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

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Question

(a) Suppose a random sample of size n =
has sample mean x 50 and sample variance s2
25 from a normal population with unknown variance
= 64.
%3D
Construct a 100(1-a)% Confidence Interval (C.I.) for the population mean
a = 0.10, a = 0.05 and a = 0.01.
with
i)
%3D
Find the lengths of the intervals constructed above. What is the relationship between the
confidence level (1- a) and the length of C.L.?

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