b) The safety commissioner in a large city wants to estimate the proportion of buildings in the city that are in violation of fire codes. A random sample of 40 buildings is chosen for inspection, and 4 of them are found to have fire code violations. Estimate the proportion of buildings in the city that have fire code violations, and find the uncertainty in the estimate.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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b) The safety commissioner in a large city wants to estimate the proportion of buildings in the city that are in violation of fire codes. A random sample of 40 buildings is chosen for inspection, and 4 of them are found to have fire code violations. Estimate the proportion of buildings in the city that have fire code violations, and find the uncertainty in the estimate. 

Question 2
a) Lifetimes of batteries in a certain application are normally
distributed with mean 50 hours and standard deviation 5 hours. Find
the probability that a randomly chosen battery lasts between 42 and
52 hours
+
Transcribed Image Text:Question 2 a) Lifetimes of batteries in a certain application are normally distributed with mean 50 hours and standard deviation 5 hours. Find the probability that a randomly chosen battery lasts between 42 and 52 hours +
c) A system consists of four components with A, B in series and C, D in
parallel connected as shown below in the following diagram.
4
4
Given that the system above with components in the order A, B, C, and
D, from top to down function independently. If the probability that the
component A, B, C, and D fail is 0.10,0.05,0.10, and 0.20 respectively.
What is the probability that the system functions?
Transcribed Image Text:c) A system consists of four components with A, B in series and C, D in parallel connected as shown below in the following diagram. 4 4 Given that the system above with components in the order A, B, C, and D, from top to down function independently. If the probability that the component A, B, C, and D fail is 0.10,0.05,0.10, and 0.20 respectively. What is the probability that the system functions?
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