The lifetime of a certain type of battery is known to be normally distributed with standard deviation o = 22 hours. A sample of 50 batteries had a meanlifetime of 120.1 hours. It is desired to construct a 95% confidence interval for the mean lifetime for this type of battery.▬▬Part 1 of 6(a) What is the point estimate?The point estimate is 120.1Part: 1 / 6Part 2 of 6(b) Find the critical value.The critical value isSkip PartCheckType here to searchX11SI8117hpfaEsSave For LaterSubmit Assi© 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Ac(?)55°F10:36F3/28/210

This question is about constructing a 95% confidence interval for the mean lifetime of a certain…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Based on a large sample of capacitors of a certain type, a 95% confidence interval for the mean capacitance, in �й, was computed to be (0.213,0.241). Find a 90% confidence interval for the mean capacitance of this type of capacitor.
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