anonymous
  • anonymous
I promise a FAN AND A MEDAL!!!!!! Sarah is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. She purchases two different brands of planting soil from a local store. Sarah applies Brand A to 1 area of the yard and Brand B to another area of the yard, both of which receive full sunlight. She waters the area with Brand B daily; she waters the area with Brand A every other day. At the end of the study, Sarah concludes Brand B is more effective in growing blueberry bushes. Why is her conclusion not valid
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
what are the options?
Vocaloid
  • Vocaloid
it says that she watered the brand B plant every single day while she only watered the brand A plant every other day - if she wants to compare how Brand A and Brand B are different, she needs to give each plant the same amount of water (this process is called "controlling for variables")
anonymous
  • anonymous
so her conclusion is not valid because she needs to give each plant the same amount of water

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Vocaloid
  • Vocaloid
yeah, pretty much
anonymous
  • anonymous
can you help me with another question
Vocaloid
  • Vocaloid
sure
anonymous
  • anonymous
Julia enjoys shooting paper balls into the wastebasket across her office. She misses the first shot 50% of the time. When she misses on the first shot, she misses the second shot 20% of the time. What is the probability of missing two shots in a row
Vocaloid
  • Vocaloid
probability of missing two shots = (probability of missing first shot)*(probability of missing second shot) = (0.5)*0.2
anonymous
  • anonymous
0.1 or 10%
Vocaloid
  • Vocaloid
excellent, good job
anonymous
  • anonymous
169 is the square of 13

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