Time Spent Playing Computer Games

question 51

Short Answer

Time Spent Playing Computer Games
Suppose that the amount of time teenagers spend playing computer games per week is normally distributed with a standard deviation of 1.5 hours.A sample of 100 teenagers is selected at random,and the sample mean computed as 6.5 hours. ​ ​
-{Time Spent Playing Computer Games Narrative} Determine the 95% confidence interval estimate of the population mean if the population standard deviation is changed to 1.2.

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Definitions:

Phase Angle

The angular difference in degrees between the peak values of two alternating currents or voltages that have the same frequency but are not in phase.

Stator

The stationary part of an electric machine, such as a motor or generator, that houses the coil windings and does not rotate.

RPM

Stands for revolutions per minute, a unit of rotational speed indicating the number of turns made by an object in one minute.

Torque

The turning force developed by a motor.