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Analyzing remote-sensing data to identify type of land cover. Geographers use remote sensing data from satellite pictures to identify urban land-cover as either grassland, commercial, or residential. In Geographical Analysis (October 2006), researchers from Arizona State, Florida State, and Louisiana State Universities collaborated on a new method for analyzing remote sensing data. A satellite photograph of an urban area was divided into 4 × 4 meter areas (called pixels).
Of interest is a numerical measure of the distribution of gaps or hole sizes in the pixel, called lacunarity. The mean and standard deviation of the lacunarity measurements for a sample of 100 pixels randomly selected from a specific urban area are 225 and 20, respectively.
It is known that the mean lacunarity measurement for all grassland pixels is 220. Do the data suggest that the area sampled is grassland? Test at α = .01.
a random sample of homeowners from dallas and houston was asked to identify the primary source of heat for their homes.
State the appropriate hypotheses. Obtain a test statistic and p-value. Interpret the results at ? = .01. Is normality assured? Is the difference large enough to be important?
A random sample of the lifetime of 49 UltraIllum light bulbs has a mean of 3,960 hours and a standard deviation of 200 hours. Construct a 95% confidence interval estimate of the mean lifetime for all UltraIllum light bulbs.
there are two major internet providers in the colorado springs colorado area one called htc and the other mountain
Test that the mean SAT score for math in 1999 is greater than that in 1989 at α = 0.05. Assume the variances are equal. Test for the equality of the variances at α = 0.05.
The grades on a short quiz in biology were 0, I , 2, . . . , 10 points. depending on the number answered correctly out of I O questions. The mean grade was 6.7 and the standard deviation was.
An Excel Spreadsheet is reprinted below. Interpret the t-test results. Are they statistically significant?
In the simplest way possible can some one provide me with the steps to find the square root of a number like 11.0554 that is not a perfect square.
Assert with probability of at least 0.95 that the error of her estimate will not exceed 0.07. How large a sample, n, will she require if she has no idea what the true proportion is.
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. A Boeing 727 co-pilot collected 61 noise observations using a handheld sound meter.
in a gambling game a woman rolls two fair dice. if she rolls a double 6 she will win 50. if she gets a double other
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