Confidence level is 90 , is not known, and the dotplot of IQ scores of 20 randomly selected statistics instructors is as shown below Assume that we want to construct a confidence interval Do one of the following, as appropriate (a) Find the critical value t 2 , (b) find the critical value z 2 , (c)...

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Confidence level is 90%, is not known, and the dotplot of IQ scores of 20 randomly

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Confidence level is 90%, σ is not known, and the dotplot of IQ scores of 20 randomly selected statistics instructors is as shown below.

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Assume that we want to construct a confidence interval. Do one of the following, as appropriate:

(a) Find the critical value t_α_/2,

(b) find the critical value z_α_/2,

(c) state that neither the normal distribution nor the t distribution applies.

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Essentials Of Statistics

ISBN: 9780321924636

5th Edition

Authors: Mario F Triola

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Question Posted: Mar 30, 2024 10:00 PM

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Confidence level is 90%, is not known, and the dotplot of IQ scores of 20 randomly

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126 128 130 132 134 136 138 IQ

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Essentials Of Statistics

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