解析 B。本题考查对假设的定义的理解。选项 A“a proven fact”是已被证实的事实,假设不是事实;选项 C“a definite answer”是确定的答案,假设不是答案;选项 D“an absolute truth”是绝对真理,假设也不是真理。而假设是有根据的猜测,所以选 B“an educated guess”。
A. Prove the hypothesis is wrong. B. Do another experiment. C. Set up the experiment. D. Give up. 相关知识点: 试题来源: 解析 C。在科学实验中,提出假设后应该设置实验。选项 A“证明假设是错误的”不是下一步。选项 B“做另一个实验”不是紧接着的步骤。选项 D“放弃”不符合实验流程。反馈...
A. It gives you something to prove or disprove B. It makes the experiment more difficult C. It doesn't matter much D. It wastes time 相关知识点: 试题来源: 解析 A。在实验中提出假设的重要性在于它给了你一些要证明或反驳的东西,所以答案是 A。B 选项使实验更困难不是目的;C 选项假设很重要...
The experiment was conducted to test a hypothesis in the area of ___. A. geology B. psychology C. economics D. archaeology 相关知识点: 试题来源: 解析 A。进行实验测试假设通常在地质学等自然科学领域;“psychology”心理学;“economics”经济学;“archaeology”考古学。反馈...
Null Hypothesis: changing the button color does not affect the conversion rate. P-value: 0.02 (2%) Interpretation: With a P-value of 0.02, there is a 2% chance that the observed increase in conversion rate happened randomly. Since 2% is less than the typical significance level of 5%, you...
Biphasic patterns of a negativity followed by a positivity, reflecting morphosyntactic processing, can be found in children with typical language development (TL) starting at 8 years old, depending on the stimuli and experimental paradigm15,16,17. However, this biphasic pattern has not been observed...
Taking advantage of the fact that São Paulo State featured in-person classes for most of the first school quarter of 2020 but not thereafter, we estimate the effects of remote learning in secondary education using a differences-in-differences strategy that contrasts variation in students’ ...
Typing has become a pervasive mode of language production worldwide, with keyboards fully integrated in a large part of many daily activities. The bulk of the literature on typing expertise concerns highly trained professional touch-typists, but contempo
we hypothesized that learning is mirrored in neural alignment: the degree to which an individual learner’s neural representations match those of experts, as well as those of other learners. We tested this hypothesis in a longitudinal functional MRI study that regularly scanned college students enroll...
The computation of the different curves is performed holding fixed 𝐿0=6×109L0=6×109, since the primer can bind to both strands of the genomic DNA double helix, and 𝑇=55T=55°C, a typical annealing temperature; the salt concentration is [𝑁𝑎+]=55[Na+]=55 mM, representing ...