Statistical inferences about a population variance
What assumption must hold to make statistical inferences about a population variance?
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The 8 high-capacity rats had mean blood pressure 89 with standard deviation 9; the 8 low-capacity rats had mean blood pressure 105 with standard deviation 13. (Blood pressure is measured in millimeters of mercury.)
(i) Determine the magnetic deflection force which acts on the proton in the chamber? The proton mass is around1.67*10^-27kg. (ii) Determine the radius of the path of proton?
Explain what a critical value is, and explain how it is used to test a hypothesis?
The Stars in a typical globular cluster orbit at speeds of around 10 km/s, and stars at the outskirts of a globular cluster are around 50 light-years from the center.
Assume that a random sample of nine measurements from a normally distributed population gives a sample mean of (xbar = 2.57) and a sample standard deviation of s=.3. Use critical values to test H0:u=3 versus Ha:u?3 using levels of significance a=.
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The accompanying table lists x = weights (in hundreds of pounds) and y = highway fuel usage rates (in mi/gal) for a sample of domestic new cars.
Find the best-predicted weight for a car that weighs 5900 pounds. Do not round. Make sure you label your answer correctly.
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Health disparities persist as a critical public health challenge both in the United States and globally. These disparities often based on race, ethnicity, socio
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