# 3 70 of observed heroin users have tried marijuana

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3. 70% of observed heroin users have tried marijuana first. 70% of all heroin users have tried marijuana first. Reliable: large sample and a represented sample 6. 25% of observed humans are benefited by pet ownership. 25% of humans are benefited by pet ownership Unreliable: small sample but not a represented sample (biased sample) 4. In the supplemental reading by Salmon do problems 7 and 8 in section 4.5 on page 139. Put the arguments into standard form for an analogy and evaluate the strength using the criteria for an analogy. 7. The force that binds planets to the sun (gravity) obeys the same general form of law as the electrical force that binds electrons to the nucleus of an atom. (Both gravity and electricity decrease in strength with the square of the distance between the bodies of particles.) Therefore, the electron particles, which have negative charges, when attracted by the positive electricity of the nucleus, should move around it in the same way that the planets move around the sun. Gravity of planets and the electric force follows the same general form of law. The planets go around the sun because of the gravity of planets that’s attracted by the sun. The electrons go around the nucleus because it’s attracted to the charges of the nucleus. 1: yes, 2: X, x 3: x, 4: n/a; reliable 8. People who buy used cheap cars and call for reduced federal spending like to let tomorrow take care of itself. People who buy used cheap cars are willing to pay the price of future expenses. People who call for reduced federal spending are willing to pay the price the of future expenses. 1: yes, 2: X, x 3: x 4: n/a; reliable 5. In the supplemental reading by Salmon do problems 4, 8, and 9 in section 4.8 starting on page 162. Put the arguments into standard form for their type and evaluate the strength using the criteria for that type.

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4. Family like divorce cases and traditional cases share parental autonomy Traditional cases should have less state interference. Family like divorce cases should have less state interference. 1: yes, 2: yes, 3: x, 4: n/a; reliable 8. 47% of observed American adults approved of the president’s economic policies. 47% of all American adults approved of the president’s economic policies. large sample and represented sample, reliable 9. Most young woman who are divorced remarry within a year of the divorce and alimony payment ceases. Movie star ex-wife will probably marry within the year of the divorce.
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