Confidence interval for shelf life
The shelf life of a particular type of battery is being studied. Twenty batteries are tested and the mean shelf life of the sample is Xbar=24.5 months. The estimated standard deviation is one month. Find a 95% confidence interval for shelf life
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An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 1.7 x 10-7 C/m2, and the plates are separated by a distance of 2.2 x 10-2 m. How fast is the electron moving just be
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