Mistake: Statement I specifies a situation where a person is greater than or equal to 16 years of age and less than or EQUAL to 18 years of age. This is incorrect because the prompt wants an example where the person is able to drive but can't vote, and by including the equal to 18 this actually means that the person can drive and vote. Statement III specifies a situation where the person is less than 18 years of age and NOT less than 16 years of age, meaning the person IS greater than and equal to 16 years of age. This does fulfill the requirement
Question 30
Mistake: Answer Choice A is incorrect because the drawCircle(x, y, r) is before the r = r + 1 and y = y+1, meaning the first time the loop is iterated the radius is still 0, and no circle is drawn. Answer Choice B is correct because it is the same as A but the drawCircle(x, y, r) is just in the right place.
Question 41
Mistake: Answer choice B is incorrect because this statement means that there is a two out of five, or 40 percent, chance that it could evaluate to 1 or 2. If this happens, the value of the sum is increased by 1, which simulates a person voting for the candidate. This does not match the goal of the program, which is to simulate an election in which a certain candidate is expected to receive 20 percent of the vote
Question 43
Mistake: Computer models can be developed before the real-world prototype is built. However, computer simulations do simplify assumptions about the real-world object and ignore many factors that may lead to error
Question 45
Mistake: I didn't know what the heuristic approach means. Heuristics, or "rules of thumb," are problem-solving methods that are based on practical experience and knowledge. They allow you to use a "quick fix" to solve a minor problem or to narrow down options. They're also a great starting point for brainstorming or exploring new ideas. A real-life example could be when you see a person with their hood up in a dark alley and you decide to subtly walk past a bit faster, your brain has probably used a heuristic to evaluate the situation instead of a full thought-out deliberation process. Therefore, answer choice C is correct because you should use it when you don't have enough time so make best guess decision.
Proof
Question 13
Mistake: Statement I specifies a situation where a person is greater than or equal to 16 years of age and less than or EQUAL to 18 years of age. This is incorrect because the prompt wants an example where the person is able to drive but can't vote, and by including the equal to 18 this actually means that the person can drive and vote. Statement III specifies a situation where the person is less than 18 years of age and NOT less than 16 years of age, meaning the person IS greater than and equal to 16 years of age. This does fulfill the requirement
Question 30
Mistake: Answer Choice A is incorrect because the drawCircle(x, y, r) is before the r = r + 1 and y = y+1, meaning the first time the loop is iterated the radius is still 0, and no circle is drawn. Answer Choice B is correct because it is the same as A but the drawCircle(x, y, r) is just in the right place.
Question 41
Mistake: Answer choice B is incorrect because this statement means that there is a two out of five, or 40 percent, chance that it could evaluate to 1 or 2. If this happens, the value of the sum is increased by 1, which simulates a person voting for the candidate. This does not match the goal of the program, which is to simulate an election in which a certain candidate is expected to receive 20 percent of the vote
Question 43
Mistake: Computer models can be developed before the real-world prototype is built. However, computer simulations do simplify assumptions about the real-world object and ignore many factors that may lead to error
Question 45
Mistake: I didn't know what the heuristic approach means. Heuristics, or "rules of thumb," are problem-solving methods that are based on practical experience and knowledge. They allow you to use a "quick fix" to solve a minor problem or to narrow down options. They're also a great starting point for brainstorming or exploring new ideas. A real-life example could be when you see a person with their hood up in a dark alley and you decide to subtly walk past a bit faster, your brain has probably used a heuristic to evaluate the situation instead of a full thought-out deliberation process. Therefore, answer choice C is correct because you should use it when you don't have enough time so make best guess decision.