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1. An economist has measured the incomes of a population. The average income is unknown, however the standard deviation of the incomes is $4000. A) the economist considers a sample of 100 incomes from the population. With 90% confidence compute the maximum error between the average income of the sample and the true mean income of the population. B) with 90% confidence compute the minimum sample size of a sample so that error between the average of the sample and the mean of the population is $1000. 2. True or false: as the sample size increases, while all other parameters remain the same, the length of the confidence interval for the mean decreases. 3. A surveyor has found an old collection of data and statistics about heights of building in a city. The sample average of a collection of 64 buildings heights, from a particular neighborhood, is 80ft and the sample standard deviation of the heights of the 64 buildings is 24ft given this information a) determine the 90% confidence interval for true average of the heights from the data set. B) determine the 95% confidence interval for the true average of the heights from the data set.
Manufacturing The Video Star Company makes two different models of DVD players, which are assembled on two different assembly lines.
Declare an array of 10 integers and initialize its elements to the following values: -10; -8; -6; -4; -2; 0; 2; 4; 6;8;10.
Observe the usual guidelines regarding the initial comment section, indenting, and so on. In addition,
An input value of 1 up to but not including 13 is a child. An input value of 13 up to but not including 20 is a teenager. An input value of 20.0 or more is an adult.
1. What recommendations would you make for U.S. companies to go about protecting their digital assets overseas?
The head of business intelligence and analytics suggests that more explanatory variables may be included in a regression model.
What is a Governance Board and what is its role and responsibilities? Explain your answer
Critically reflect on the importance of the risk and return balance. Consider the following:
Do some research about creating a secure home network and the typical mistakes made in the management of home networks.
A three-input OR-AND-INVERT (OAI) gate shown in Figure 1.43 produces a FALSE output if C is TRUE and A or B is TRUE. Otherwise it produces a TRUE output. Complete a truth table for the gate.
The width of the window is to be 7 feet, and the height of the arch is to be 3 feet. To sketch the arch above the window, the carpenter uses a 7-foot string attached to two thumbtacks. Approximately where should the thumbtacks be placed?
Write a recursive function testPalindrome that returns true if a string is a palindrome, and false otherwise. Note that like an array, thesquare brackets ([]) operator can be used to iterate through the characters in a string.
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