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Suppose IQ scores were obtained from randomly selected siblings. For 20 such pairs of people, the linear correlation coefficient is 0.936 and the equation of the regression line is Y^=-22.06+1.23x, where x represents the IQ score of the younger child. Also, the 20 x values have a mean of 93.66 and the the 20 y values have a mean 93.4. what is the best predicted IQ score of the older child given that the younger child has an IQ of 91. use significance level 0.05
The American Automobile Association checks the prices of gasoline before many holiday weekends. Listed below are the self-service prices for a sample of 15 retail outlets during the May 2003 Memorial Day weekend in the Detroit
Show that {Xt} is a white noise sequence.This provides an example of a dependent white noise sequence. Prove that Xt and Xt+1 are not dependent.
Composite sampling is a way to reduce laboratory testing costs. A public healthdepartment is testing for possible fecal contamination in public swimming pools. In thiscase, water samples from 5 pools are combined for one test.
ten good coins are tossed simultaneously.find the probability of obtaining four heads.use the binomial distribution to
Manufacturer of mole and gopher poison has experienced the following monthly demand for an environmentally sound pesticide poison. Using a Average method, what would the forecast have been for July?
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
A survey of licensed drivers inquired about running red lights. One question asked, "Of every ten motorists who run a red light, about how many do you think will be caught?"
They became ________ likely to underperform on aptitude tests and ________ likely to become aggressive toward someone who had insulted them.
Supposes that the diameter of bearings are independent normally distributed random variables with mean µB = 1.005cm and variance σ²B = (0.003)² cm² . The diameter of shafts are independent normally distributed random variables having mean µB = 0.9..
suppose we rolled a pair of fair dice and count the number of dots located and the face that lands up. describe this
Determine the proportion of homes that have a pool. At the .05 significance level, can we conclude that less than 40 percent of the homes sold in the Denver area had a pool? What is the p-value?
a biologist has found that 40 of all brown bears are infected with trichinosis. 10 brown bears are tested for
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