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Consider the problem of representing line segments in a plane. Each segment is represented as a pair of points: a starting point and an ending point. Define a constructor make-segment and selectors start-segment and end-segment that define the representation of segments in terms of points. Furthermore, a point can be represented as a pair of numbers: the x coordinate and the y coordinate. Accordingly, specify a constructor make-point and selectors xpoint and y-point that define this representation. Finally, using your selectors and constructors, define a procedure midpoint-segment that takes a line segment as argument and returns its midpoint (the point whose coordinates are the average of the coordinates of the endpoints). To try your procedures, you'll need a way to print points:
for a hypothetical magazine the probability that the reader is male given that the reader is at least 35 years old is
For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ 2 , the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
An engineer is studying bearing failures for two different materials in aircraft gas turbine engines. The following data are failure times (in millions of cycles) for samples of the two material types.
calculate the expected to reach snake eyes, in equilibrium, and see if this resolves the apparent paradox. If you are still in doubt, simulate the experiment to decide which argument is correct. Can you give an intuitive argument which explains th..
1. there are two basic forms of sleep slow wave sleep sws and rapid eye movement rem sleep. infants spend about 50 of
The following is a time series data set. Run a time-series analysis for projections of April 2009 in the Healthcare industry of Nashville.
the budgeting process for a midwestern college resulted in expense forecasts for the coming year in millions of 9 10
For a binomial probability experiment, if p is 0.1 and n is only 150, we cannot use the normal approximation to the binomial distribution without continuity correction.
suppose that the reaction time sec to a certain stimulus is a continuous random variable with a density function given
Investigate the percent of babies born below your birth weight by specific term. (If you do not know this information, make a guess of your birth weight and term.)
the population mean for verbal iq scores is 100 with a standard deviation of 15. suppose a researcher takes 50 random
A gambler plays a game in which on each play he wins one dollar with probability p and loses one dollar with probability q = 1 - p. The Gambler's Ruin problem is the problem of finding the probability wx of winning an amount T before losing everyth..
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