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The average speed of vehicles on a freeway is being studied. Assume that the standard deviation of vehicle speed is known to be 8 km/h.
(a) Suppose observations on 120 vehicles yielded a sample mean of 105 km/h. determine two-sided 99.5% confidence intervals of the mean speed. (Assume a normal distribution).
(b) In part (a), how many additional vehicles' speed should be observed such that the mean speed can be estimated to within ±1 km/h with 99.5% confidence?
(c) Suppose Jason and Britney are assigned to collect data on the speed of vehicles on this highway. After each person has separately observed 60 vehicles, what is the probability that Jason's sample mean will be equal to Britney's sample mean ±0.5 km/h?
(d) Repeat part (c) if each person has separately observed 120 vehicles instead.
write a computer program that will provide a user with the equilibrium concentration of vacancies in a metallic element as a function of temperature.Temperature range should be men
Problem 1. Use Matlab to solve the following system of linear equations: 2x + y + 3z = 1 2x + 6y + 8z = 3 6x + 8y + 18z = 5 Capture Matlab code and the result in a text fi
how to create adjacency matrix for amino acids in matlab?
A 300 km, 3-phase, 50Hz transmission line has spacing as shown in Figure 2. Each phase of the line consists of a bundle of three conductors. (a) Find the total per-phase induct
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