6 pts Suppose x and y are two random variables with correl.pdf

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Acro1988

(6 pts) Suppose x and y are two random variables with correlation 0.6 . Their standard deviations are x=2,y=3, and their expectations are E[x]=10,E[y]=12. If the two variables are related by the regression equation y=a+bx+, what values do a and b have? i) b= ii) a=.

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6b Besides Crater Lake, give another example on Earth of this feature. 74 This is the term for the mixture of Water and Voicanic . Debris/mud that can flow down an erupting composite volcano, burying everything under many tons of mud. 8. This is the term for the Fast-flowing mixture of Super-Hor Gasses and Volcanic Debris that can cascade down an erupting composite volcano, incinerating everything in its path. 9. True or False). Some Large Vertical Eruptions (Plinian Eruptions) can inject enormous amounts of volcanic ash and sulfur-dioxide aerosols into the Stratosphere, causing global cooling for a year or more afterwards. 10 (True or False). Some volcanoes can release enormous amounts of gasses such as fluorine, Carbon Dioxide, or Sulphur Dioxide at the ground level, poisoning, suffocating, or chemically burning all living things in its path. 11a2 (True or False). The Volcanic Explosivity Scale is logarithmic, meaning that a category 3 eruption is 10 times more explosive than a category 2 eruption. 11b (True or False) The highest possible number on The Volcanic Explosivity Scale is 10. 12 Name one of the Super Volcanoes labeled as such by the USGS (from our notes).

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6. Farly scientists tried to determine the age of Zarth usinis a variety of methods. After fomond Halley proposed that seawater is salty because rivers tansport dissolved ions (from the weathering of continental rocks) to the oceans, John Joly sugessted that the age of the Earth could be easily calculated if the amount of sait in the ocean and the rate at which salt is added by the tivers each year is known, (10 pts) a. Calculate the age of the Earth using the following facts. Your answer should be given as a range between two values. Be careful with units and decimal placest show your work for full credit. - The volume of the oceans is 1,370,000,000km1 - 1% of seawater, by volume, is sodium. - The annual volume of water entering the oceans from rivers is 30,000km ?. - River water contains between 3 and 11 parts per million (ppm) sodium (i.e., 0.0000030.000011) b. What is the actual age of Earth? How does your answer compare to this? If these answers vary significantly, explain possible sources of error that contribute to this difference (one paragraph will suffice)..

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6.3 Consider the loop in the program of Figure 2.8. Assume it is executed in a five-stage pipeline with forwarding paths to theALU from registers RYand RZ in Figure 5.8. Assume that the pipeline uses static branch prediction with a not-taken assumption. Draw a diagram similar to Figure 6.1 for the execution of two successive iterations of the loop. 6.5 Repeat Problem 6.3 for a pipeline that uses delayed branching with one delay slot. Reorder the instructions as needed to improve performance..

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