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Assume that the density of Chokecherry trees in a degraded forest is 32 trees per 1,000 m2 and further assume that they are randomly distributed through this forest, if two 10x10 meter plots are randomly selected, then:
a) What is the probability that both plots will have exactly two such trees?
b) What is the probability that one of the plots will have exactly one such tree while the other plot has more than one such tree?
That only 94 percent of the booked passengers actually show up for the flight. Find the probability that if the airline books 16 persons, not enough seats will be available.
in a large section of a statistics class the points for the final exam are normally distributed with a mean of 72 and a
Discuss the subject matter in the article and interpret the results and what the confidence interval and the margin of error mean as they apply to the specific subject matter.
How would I go about finding a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6?
x you then repeat this procedure three more times. you learned in class that u_x = u can you conclude that the mean of the four sample mean will be equal to the population mean, 65? why or why not?
The maximum distance at which a highway sign can be read is determined for a sample of young people and a sample of older people. The mean distance is computed for each age group. What is the most appropriate null hypothesis about the means of the..
suppose that x1...xn form a random sample from a normal distribution with meanu u pronounced mu and variance1.a write
To test the effectiveness of four different types of lawn fertilizer, each type was applied to six different lawns. The same size patch of lawn was mowed for all 24 test units and the grass clippings were weighed
The sample mean is 4.1 and the sample standard deviation is 1.4. It can be assumed that the population is normally distributed. The degrees of freedom associated with this are?
These data represent the ages of drivers and the number of accidents reported for each age group in Pennsylvania for a selected year. Find the equation of the regression line for the given data.
A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples
the margin of error for a 95% confidence interval and then construct to the 95% confidence interval for the population proportion. Construct a 95% confidence interval for the population proportion p of all Twinkle bulbs.
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