Answer:
The answer is- Test of two proportions
Explanation:
A test for two proportions is used to compare two proportions in order to see if they are the same. it is used when comparing the percentages of two groups. Like in the question, the marriage counselor is checking to see if the percentage of communicative couples whose marriage ended separation or divorce was greater than the percentage of non-communicative couples whose marriage ended in separation or differences.
The two different proportions are the communicative and non-communicative couples.
Answer:
In the context of classical conditioning, closing the door has become a(n) conditioned stimulus.
Explanation:
A conditioned stimulus, in classical conditioning, can be defined as a previously neutral stimulus that has become associated with an unconditioned stimulus, beginning to trigger a response.
It is very likely that closing a door didn't mean much to students in general (neutral). However, it was paired with the announcement of a quiz. Announcing a quiz (unconditioned) triggers a response - students feel surprised, anxious, worried, etc. After pairing up both stimuli a few times, students learn to associate them. Now, closing the door is a conditioned stimulus. Even if the professor does not announce a quiz, students will feel anxious and worried just by watching him close the door.
D.mao zedong`s communlist party defeated chiang kai-shek`s nationalist party in china
Answer would be b. phanerozoic
