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The level of dissolved oxygen in a river is an important indicator of the water's ability to support aquatic life. You want to know about the mean level of oxygen in a particular stream and collect water samples at 15 randomly chosen locations along the stream to measure the dissolved oxygen. Here are your results in milligrams per liter:
4.535.043.295.234.135.504.834.405.426.384.014.662.875.735.55
Construct a 99% confidence interval for the mean amount of dissolved oxygen in the river.
(4.2016, 5.3984)(4.0491, 5.4935)(4.1081, 5.4919)(4.3765, 5.1993)(4.5418, 5.0582)
suppose you roll two dice simultaniously. the possible outcomes are listed
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Five fossil specimens have preserved both the femur and humerus bones. The measurements (in centimeters) for each bone are given below.
Use drinking as an excuse for outrageous behavior. including public nudity and dancing on tables. Find the standard error of this estimate. and interpret.
suppose you have variables x and y and you attempted to regress y on x i.e. predict y from x. if you add 10 to the
Suppose U is a Unit (25, 50) random variable.Find the CDF of U and sketch a graph.
Determine the characteristic values of the given matrix and find the corresponding vectors:
the table below gives information on coded length measurements in a machining process. the data shown are macrx and r
for the standard normal probability distribution the area to the right of the mean is -0.5 0.5 1 any value between 0
the amounts of soft drink machine is designed to dispense for each drink are normally distributed with a mean of 11.7
When a researcher has two samples with two means, one of the assumptions for two samples is independence of between the two samples. What does this mean? What happens if the independence assumption is violated?
Create a dot plot and a box plot to represent this data. If we create a sample by picking every 3rd data from the population, how would your answer to part a change? Show your work
A multiple choice test has three questions with 5 possible answers (and oly one right answer each). You decide to randomly guess the right answer.
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