Mathematics, 13.11.2019 22:31 anaroles04
One method of distinguishing between granitic (g) and basaltic (b) rocks is to examine a portion of the infrared spectrum of the sun's energy reflected from the rock surface. let r1, r2, r3 denote measured spectrum intensities at three different wavelengths; typically, for granite, r1 < r2 < r3, whereas for basalt r3 < r1 < r2. when measurements are made remotely (using aircraft), various orderings of the ri's may arise whether the rock is basalt or granite. flights over regions of known composition have yeilded the following information.
granite basalt
r1 < r2 < r3 60% 10%
r1 < r3 < r2 25% 20%
r3 < r1 < r2 15% 70%
total 100% 100%
suppose that for a randomly selected rock in a certain region, p(granite) = 0.25 and p(basalt) = 0.75.
a) show that p(granite | r1 p(basalt | r1
b) if measurements yielded r1
c) if measurements yielded r1
d) if measurements yielded r3
e) using the classification rules indicated in questions a) and b), when selecting a rock from this region, what is the probability of an erroneous classification[hint: either g could be classified as b or b or g, and both p(b) and p(g) are known].
Answers: 1
Mathematics, 22.06.2019 00:00
Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?
Answers: 3
Mathematics, 22.06.2019 04:00
Going from point a to point b, the cheetah traveled at an average rate of 70 mph. returning to point a, the cheetah traveled at an average rate of 40 mph. can we say that this cheetah’s average rate was 55 mph? uchet write an equation for the average rate for the trip. remember, the cheetah runs from point a to point b and back to point a. first leg of trip: second leg of trip: ⦁ the following equation represents the average rate for the trip. is this equation equivalent to the one you wrote above? explain why or why not.
Answers: 2
One method of distinguishing between granitic (g) and basaltic (b) rocks is to examine a portion of...
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