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laiz [17]
3 years ago
6

A pharmaceutical company manufactures medicine to reduce pain caused by migraine headaches. The company is investigating whether

a new medicine is more effective in reducing pain than the current medicine. A random sample of 500 participants who experience migraines was selected, and the participants were randomly assigned to one of two groups of equal size. The first group received the current medicine and the second group received the new medicine. When a participant experienced a migraine, he or she was instructed to take the medicine and, 15 minutes after taking the medicine, to rate the pain relief on a scale from 1 to 10, with 1 being no relief to 10 being complete relief. At the end of six months, the average pain relief for each participant was calculated. Which of the following is the best description of the study?a. An experiment using a completely randomized designb. An experiment using a matched-pairs designc. An observational study using a simple random sampled. An observational study using a cluster samplee. An observational study using a stratified sample
Health
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

An observational study using a simple random sampled.

Explanation:

Is an observational study because researchers want to compare the effect of two drugs for migraine. This kind of study is applied when there is a treatment that want it to be observed without changing the subjects of study, in this case the people are just going to take the pill and mention the effectiveness of it.  

Is a simple random sampled because from the total group, there was a simple random division, without any other specific characteristic.

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The alternation between soloist and chorus heard in this alleluia is best described as responsorial singing.

<h3>What is an alleluia?</h3>

Alleluia also known as hallelujah refers to a liturgical chant in which that word is combined with verses of scripture.

From the question above, the alternation between soloist and chorus heard in this alleluia is best described as responsorial singing.

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Learn more about Alleluia at: brainly.com/question/4857296

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