The number of steps to cover the same distance was measured for 61 randomly chosen people. the sample mean is x = 2640 steps and the sample standard deviation is s 528 steps. assume distribution to be normal round your answers to the nearest integer (e. g. 9876) a) construct a 90% two-sided confidence interval on the mean ≤ μ ≤ b) construct a 90% lower confidence bound on the mean μ ≥ c) construct a 90% upper confidence bound on the mean μ ≤

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj