Final answer:
To reduce an error bound in a study, one should increase the sample size. Car enthusiasts lowering cars should install stiffer springs for better handling and less vehicle damage. Behavior modification can be achieved through positive reinforcement by associating desired behavior with a rewarding experience.
Step-by-step explanation:
To achieve a smaller error bound while keeping the same level of confidence, the study should have increased the sample size. A larger sample size typically reduces the error margin because it provides a more accurate representation of the entire population. In statistical studies, the sample size plays a crucial role in determining the precision of the estimated results, and greater numbers provide more reliable data.
egarding the modification of cars, if individuals want to lower their vehicles, they should indeed install stiffer springs. This modification helps to maintain the structural integrity of the vehicle while it's closer to the ground and reduces the risk of the undercarriage scraping against the road surface. Stiffer springs provide better handling and stability, especially when the vehicle undergoes increased lateral forces such as when turning or during evasive maneuvers.
To change a behavior through behavior modification using positive reinforcement, one should introduce a reward every time the desired behavior is exhibited. The positive reinforcer should be something personally motivating and enjoyable, facilitating the recurrence of the desired behavior. For instance, if someone wishes to develop a habit of exercising regularly, they could use the positive reinforcer of watching a favorite TV show afterward, thereby associating the exercise with an enjoyable activity and encouraging repetition of the behavior.