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oksian1 [2.3K]
3 years ago
14

Wich types of organism developed first due to the early environmental conditions on earth?

Biology
1 answer:
N76 [4]3 years ago
7 0

Answer:

trtytytrtrtytyytrtyttytyttyytr

Explanation:

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A television advertisement claims that a certain brand of cough drop reduces coughing for 8 hours. Describe an investigation tha
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See explanation below.

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<em>Study Design - Partially double-blinded study</em>

  • The <u>cohort study </u>will be composed of 80 adults (aged ≥18 years) with a clinical diagnosis of constant coughing present as a result of a cold, which would be measured by semiautomated ambulatory cough monitor.
  • This study will be divided into an experimental group and a control group:
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Participant cough will be recorded <u>every hour</u> (until 8 hours are reached) for two consecutive days (for repetitions) in both groups using semiautomated ambulatory cough monitor and analyzed statistically.

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Experimental group: <u>If coughing is significantly (statistical analysis) reduced within the 8 hours </u>(<em>after repetitions</em>) and a symptom improvement is observed, <u>the hypothesis that cough drops are effective is valid</u>.

Control group: To determine that cough drops treatment is effective, the no-treatment group should score worst and participant should not show significant improvement.

*<em>In scientific experiments, repetitions are important to prevent bias and error.</em>

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