Mathematics, 21.03.2020 10:14 priceisright11401

Determine whether the study depicts an observational study or an experiment.

A scientist was studying the effects of a new fertilizer on crop yield. She randomly assigned half of the plots on a farm to group one and the remaining plots to group two. On the plots in group one, the new fertilizer was used for a year. On the plots in group two, the old fertilizer was used. At the end of the year the average crop yield for the plots in group one was compared with the average crop yield for the plots in group two.
Question 23 options:
a) experiment
b) observational study

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 17:20

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Answers: 2

Answer

Mathematics, 21.06.2019 21:00

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

Answers: 1

Answer

Mathematics, 21.06.2019 21:30

How many terms does the polynomial x^2 y^2 have

Answers: 1

Answer

Mathematics, 21.06.2019 21:30

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Answers: 1

Answer

You know the right answer?

Determine whether the study depicts an observational study or an experiment.

A scientist...

Questions

Mathematics, 17.08.2020 22:01

From 12:00 midnight to 6:00am...