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Author Question: A drug company wanted to test a new depression medication. The researchers found 500 adults aged ... (Read 142 times)

james9437

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on: Jul 24, 2018
A drug company wanted to test a new depression medication. The researchers found 500 adults aged 25-35 and randomly assigned them to two groups. The first group received the new drug, while the second received a placebo.
 
  After one month of treatment, the percentage of each group whose depression symptoms decreased was recorded and compared. Identify the experimental units. A) the 500 adults aged 25-35
  B) the percentage who had decreased depression symptoms
  C) the drug (medication or placebo)
  D) the one month treatment time

Question 2

According to government data, the probability that an adult was never in a museum is 10. In a random survey of 20 adults, what is the mean and standard deviation of the number that were never in a museum?
 
  A) mean: 2; standard deviation: 1.34164079 B) mean: 18 standard deviation: 1.41421356
  C) mean: 18; standard deviation: 1.34164079 D) mean: 2; standard deviation: 1.41421356


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aloop

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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


james9437

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Reply 2 on: Jul 24, 2018
Gracias!

frankwu0507

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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