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A survey taken showed that among 785 randomly selected subjects who completed 4 years of college, 144 smoke and 641 do not smoke (based on data from the American Medical Association). Use the 0.01 level of significance to test the claim that the rate (proportion) of smoking among those with four years of college is less than 27 out of 100 rate of the general public. Why do you think that the rate of college graduates who smoke would be less than the rate of the general public?
whiich is $3,984 cheaper than the first car. she also decides she only wants to wait one more year to buy her car.w much money will Ann need to save each month during the final year in order to buy her new dream car?
An airplane is flying on a compass heading of 340 degrees at 325 mph. A wind is blowing with the bearing 320 degrees at 40 mph. Find the component form of the velocity of the airplane and find the actual ground speed and direction of the plane.
Assume that for each type of system below there is at least one variable with a nonzero coefficient. Find the smallest and largest rank possible for the corresponding augmented matrix in each case.
Archimedes principal of buoancy states that an object submerged in a fluid is buoyed up by a force equal to the weight of the fluid the object displaces.
an airplane is flying at an elevation of 6 miles on a flight path directly over a radar tracking station. If S, the distance between the radar stattion and the plane is decreasing at the rate of 400 mi/hr when S is 10 miles, what is the velocity o..
What is the point of intersection of the two graphs? What information does this give us?
consider the region bounded by the curves y=pi/2 and below by the curve sin(y)=(x)^1/2. suppose we rotate this region about the x-axis to make a solid, and want to find the volume.
Probability Calculating the Expected Value, You give $3 for a bet in a casino game and there is a 253/495 probability that you will lose your $3 and there is a 242/495 probability that you will make a net gain of $3
Coffee is draining - Application of calculus
Isomorphisms and automorphisms, This week lecture is taught about Isomorphism, automorphism and Inner automorphism, but I don't understand what they are.
An anchor weighing 125 lb in water is attached to a chain weighing 4 lb/ft in water. Find the work done to haul the anchor and chain to the surface of the water from a depth of 50 ft.
a coin collector was given 9 gold coins one of which was counterfeit. all coins looked the same but the fake was
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