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From a long lasting experience with programming in FORTRAN Programming language, it is known that the lines of code (LOC) are normally distributed with a mean of 500 and a standard deviation of 96 LOC. From an experiment with 50 programmers, the mean LOC is 535. At 95% confidence level, does the experiment provide enough evidence that the mean LOC has increased.
Student team examined parked cars in 4 different suburban shopping malls. One hundred vehicles were studied in each location. Research question : At α = . 05.
Genetics a couple plan to have two children and want to know the probability of having one boy and one girl.
Find the probability that this shuttle component functions successfully if n = 2. - Find the probability that this shuttle component functions successfully if n = 4.
"I want a number that will describe the typical score on this test. Most did very well, some scored in the middle, and a very few did quite poorly."
How is the difference between an ordinary annuity and an annuity due affect the PV and FV of two otherwise identical annuities?
According to Labor Department statistics, the average U.S. work week shortened from 39 hours in the 1950s and early 1960s to 35 hours in the 1990s. - Test for significance of change.
A company's market share is very sensitive to both its level of advertising and the levels of its competitors' advertising.
Assuming that the distribution of the costs is normal, what is the probability that the average for this sample is between $400 and $425?
Provide an example of two of the laws of exponents. Explain how to simplify them. Tell how do the laws work with rational exponents and then provide a third example to simplify that includes a rational (fractional) exponent.
Is there significant evidence that the success rate of procedure in treating kidney stones is different than the success rate of open surgery?
Carry out a survey to estimate the mean or total of a population of your choice, in which an auxiliary variable might be expected to have a linear relationship with the variable of interest. In the process of carrying out the survey and making the..
Display gender information in a chart and plot age data in a box plot - Calculate the appropriate measure of central tendency and variability for the age and gender. What conclusion can you draw from the data?
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