Means of two normally distributed populations
If we are testing the difference between the means of two normally distributed populations with samples of n1 = 10, n2 = 10, the degrees of freedom for the t statistic is ____.
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In a small town, the relationship between robberies and police officers on aduty has been collected. X represents the number of police officers on duty and y represents the number of reported thefts.
If the collar starts from rest at A under the action of the constant 2.9-lb horizontal force, calculate its velocity v as it hits the stop at B.
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Determine the volume of the tank, in m^3, and the final pressure, in bar. Also, show the process on both a P-v and T-v diagram.
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