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Author Question: A company has tried to improve the effectiveness of its dishwashing detergent and wants to see if it ... (Read 194 times)

wrbasek0

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on: Jul 24, 2018
A company has tried to improve the effectiveness of its dishwashing detergent and wants to see if it works better than the original formula. They use 6 identical new dishwashers and load them identically with dirty dishes.
 
  Three packs of each of the two types of detergent are used, and they are randomly assigned to one of the six dishwashers. After the load is run, they rate each load for overall cleanliness. Which of the following is true?
  A) Blinding is impossible in this experiment because they must be able to see the dishes.
  B) The explanatory variable is the different dishwashers.
  C) Because each brand is used in three dishwashers, replication is used properly.
  D) A control group with no detergent at all is needed.
  E) The response variable is the type of detergent.

Question 2

Does Procellera Antimicrobial Wound Dressing help injuries heal faster? Researchers checked records of 38 patients who had been treated for acute or chronic wounds between 2010 and 2012.
 
  They found that those who had been treated with Procellera healed almost twice as fast. This is a
  A) matched experiment
  B) prospective study
  C) retrospective study
  D) survey
  E) randomized experiment
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Ahnyah

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Reply #1 on: Jul 24, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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wrbasek0

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Reply 2 on: Jul 24, 2018
Excellent

bigcheese9

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Reply 3 on: Yesterday
Wow, this really help

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