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A rectangular dam 30 m wide supports a body of water to a height of 25 m.
(a) Neglecting atmospheric pressure, find the total force due to water pressure acting on a thin strip of the dam of height dy located at a depth y.
(b) Integrate your result in part (a) to find the total horizontal force exerted by the water on the dam.
(c) Why is it reasonable to neglect atmospheric pressure?
Does it appear that gender/sex is a significant factor in the differences in salary in this sample?
Question 3: The null hypothesis for the test of independence states that no correlation exists between the variables.
The steps in testing a research hypothesis Comparing the means of two or more groups Calculating the correlation between two variables
1. Find the derivative. 5. The displacement s (in cm) of a linkage joint of a robot is given by s = (4t-t2)2/3, where t is the time (in s). Find the velocity of the joint for t = 2.75 s.
Show the scatterplot for this data with the least squares regression line. Find R^2. How much of the variation is explained by the regression line?
Prepare a 95% confidence interval for the average grocery bill. Would a 99% confidence interval be narrower or wider than the 95% confidence interval?
Compute the 99% confidence interval for the mean life of this new type of light bulb.
How many degrees of freedom are there in determining: the among group variation, the within group variation and the total variation?
Find a 95% confidence interval for the process mean lifetime and give an interpretation of this interval.
For this assignment you are to write a culminating quantitative research report on the concepts and topics that you learned in this course. For this paper, you need to critique two or more research papers/journals that use quantitative research me..
Evaluate the indefinite integrals and Evaluate the definite integrals
What is the 95% confidence interval for the difference in the mean HDL levels between men who exercise regularly and those who do not?
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