![Diego2049](/avatars/20073.jpg)
Diego2049
11.09.2019 •
Mathematics
Acrop scientist is conducting research with a drought resistant corn hybrid. she is interested in determining if using fertilizer x will increase plant height. she prepares 20 single acre plots and randomly assigns 10 to have normal soil while the other 10 are planted with fertilizer x. the resulting average height for each group of 10 plots was recorded. select all that apply.
a. this is best described as an observational study.
b. the response variable is whether or not fertilizer x was used.
c. the explanatory variable is the average height for each group of 10 plots
d. this study is best described as an experiment.
e. the explanatory variable is whether or not fertilizer x was used.
f. the response variable is the average height for each group of 10 plots
Solved
Show answers
More tips
- F Family and Home 5 Tips for Choosing Toys for Your Child...
- L Leisure and Entertainment How to Find a Phone Number by Address: The Ultimate Guide...
- P Philosophy How to Properly Create a Vision Board?...
- C Computers and Internet What is Web 2.0 and How Does it Work?...
- S Style and Beauty Is Photoepilation the Solution to Unwanted Hair Forever?...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
Answers on questions: Mathematics
- M Mathematics In the past month, Manuel rented 7 video games and 6 DVDs. The rental price for each video game was $2.50. The rental price for each DVD was $4.30. What is the total amount...
- M Mathematics 4x + 5y = -28 -4x – 7y = 28...
- M Mathematics I really need help with this derivatives problem (calculus 1). (chegg tutors have given me very broad explanations so I ve been stuck on this one for hours)...
- M Mathematics Use synthetic division to find (x² - 6x + 8) = (x - 4). Write your answer in the form q(x) + where q(x) is a polynomial, r is an integer, and d(x) is a linear polynomial....
- M Mathematics What is the value of n in the equation –negative StartFraction one-half EndFraction left-parenthesis 2 n plus 4 right-parenthesis plus 6 equals negative 9 plus 4 left parenthesis...
- M Mathematics i need 2.31 as a percent...
- M Mathematics Angie baked 100 cookies and 20 brownies.She wants to switch them into equal groups in the bank so each group must have the same number of cookies and brownies with none...
- M Mathematics 4. In which quadrant is point B located? A. Quadrant I B. Quadrant II C. Quadrant III D. Quadrant IV 5. In which quadrant is point D located? A. Quadrant I B. Quadrant...
- M Mathematics The probability density function shown models the amount of rainfall per year for a certain location.If the area of each square on the grid is 0.05, estimate the probability...
- M Mathematics What’s 8X +15 equals 63...
Ответ:
d. This study is best described as an experiment.
e. The explanatory variable is whether or not fertilizer X was used.
f. The response variable is the average height for each group of 10 plots.
Step-by-step explanation:
Given : A crop scientist is conducting research with a drought resistant corn hybrid.
She is interested in determining if using fertilizer X will increase plant height.
She prepares 20 single acre plots and randomly assigns 10 to have normal soil while the other 10 are planted with fertilizer X.
This study is best describe as an experiment because the scientist is experimenting about the increase in plant height with an generation of 20 single acre plots not like an observational study where the observer just observe the study without any influence.
Here the fertilizer is used to see the change in the plant height.
So, the explanatory variable is whether or not fertilizer X was used and the response variable is the average height for each group of 10 plots.
Ответ: