We randomly select a group of cars owned by people in Helena, and measure the mileage on each car, getting the following data:576535473250961632785005259953517984892047857522526074556182547966314449642469765005060959514456039052643393085882838411351636908865410614225233341815169181166714176352116271161371 (a) Construct a 91% confidence interval._________< u < _______(b) What is our test statistic?________(c) What is our two tailed P-value ? ______

Given data is appropriate for z-test for single mean . because it is a large sample.

Answered: We randomly select a group of cars…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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We randomly select a group of cars owned by people in Helena, and measure the mileage on each car, getting the following data:

57653	54732	50961	63278	50052	59953	51798
48920	47857	52252	60745	56182	54796	63144
49642	46976	50050	60959	51445	60390	52643
39308	58828	38411	35163	69088	65410	61422
52333	41815	169181	166714	176352	116271	161371

(a) Construct a 91% confidence interval.

_________< u < _______

(b) What is our test statistic?________

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