21. When forming confidence intervals, it is very important that you only take large samples from Normal populations. A) True B) False

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11 Nov 2018

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20. Since confidence intervals are based on the sampling distribution of the sample mean, it is possible to form confidence intervals when sampling from slightly skewed distributions due to the central limit theorem. A) True B) False

A television camera is positioned 4000 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also, the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. Let’s assume the rocket rises vertically and its speed is 600 ft/s when it has risen 3000 ft.

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21. When forming confidence intervals, it is very important that you only take large samples from Normal populations. A) True B) False

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