answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
professor190
1 month ago
4

A farmer who grows blackberries has found his harvest to be lower than usual. He suspects that some animals are eating the berri

es before he can pick them. The farmer thinks it may be either birds (landing on the bushes to feast on berries) or rodents (climbing the bushes from below to munch on berries). He decides to first test the hypothesis that birds are eating his berries, and consults with a local expert on how best to prevent the birds from eating berries. He has eight fields with 10 rows of berry bushes in each field. In one of his fields (depicted below, as viewed from above), he covers half of the rows with nets that will prevent birds from landing on the bushes, and he leaves the other half uncovered. Over the course of 8 weeks, he counts the berries harvested from each row of bushes in the test field. What are the independent and dependent variables in the farmer's experiment
Mathematics
1 answer:
Inessa [12.5K]1 month ago
7 0

Answer:

A farmer cultivating blackberries has observed a decrease in his crop yield compared to prior years. He suspects that wildlife might be consuming the berries before he can harvest them. The farmer considers that the culprits could be either birds, which land on the bushes to eat, or rodents, climbing up to munch on the berries. He plans to first investigate the possibility of bird interference and seeks advice from a local expert on effective bird deterrents. He manages eight fields, each with ten rows of berry bushes. In one specific field (illustrated below from an overhead view), he covers half of the rows with nets designed to keep birds from landing, while leaving the other half exposed. He monitors the berry yield from each row over the span of eight weeks.

What are the independent (treatment) and dependent (response) variables in the farmer's investigation?

a) The independent variable is the number of rows while the dependent variable is the quantity of harvested berries.

b) The independent variable is the presence or absence of nets while the dependent variable is the number of rows.

c) The independent variable is the quantity of harvested berries whereas the dependent variable is the nets' presence or absence.

d) The independent variable is the presence or absence of nets with the dependent variable being the quantity of berries harvested.

Answer:

The independent variable is the presence/absence of nets, while the dependent variable is the number of berries collected. (d)

Step-by-step explanation:

Independent variable: This variable is the one that is fully manipulated by the experimenter in a scientific study. It can take any value as decided by the experimenter. In this case, the farmer determines which rows will have nets affixed or not, making the presence or absence of nets entirely under his control.

Dependent variable: This variable's values depend on the outcomes of the independent variable and is the focus of the study by the experimenter. In this scenario, the number of harvested berries is the dependent variable because it relies on whether birds can access the berries protected by nets, which, in turn, depends on the nets being present or not.

You might be interested in
A department store sells logo shirts at an original price of $20. Every month that a shirt doesn’t sell, the store reduces the s
Inessa [12570]

Answer: Macy's pre-tax shirt price is $5.63

Step-by-step explanation:

Details:

Original cost = 20

sale price drops by 25% every month it remains unsold.


First markdown month:

20 * (100%-25%) = 20 * 75% = 15


Second markdown month:

15 * 75% = 11.25


Macy, being an employee, enjoys a 50% discount on the current price.

11.25 * 50% = 5.625

11.25 - 5.625 = 5.625 or rounded to 5.63

Hope this helps!:)

3 0
1 month ago
Read 2 more answers
On a coordinate plane, a curved line labeled f of x with a minimum value of (1.9, negative 5.7) and a maximum value of (0, 2), c
AnnZ [12381]

Answer: F(x) > 0 in the ranges (-0.7, 0.76) and (0.76, ∞).

I hope this is useful:)

5 0
17 days ago
Read 2 more answers
The figure shows a kite inside a rectangle. Which expression represents the area of the shaded region? 2x2 4x2 6x2 8x2
lawyer [12517]
The area calculation for the shaded section, as seen in the attached diagram, involves subtracting the area of the kite from that of the rectangle. The area of the rectangle is calculated as (3x+x)*(x+x), which simplifies to 4x*2x, equating to 8x². The area of the kite is determined using the formula (1/2)*[d1*d2], where d1 and d2 represent the diagonals, specifically d1=4x and d2=2x. Therefore, the area of the kite becomes (1/2)*[4x*2x], leading to 4x². Consequently, the area of the shaded region can be computed as 8x²-4x², resulting in 4x². Thus, the solution is 4x².
5 0
26 days ago
Read 2 more answers
You paid $36.20 for a sweater that originally cost $90.50. What percentage of the original price was the sweater on sale for?You
tester [12383]
The result I found is 32.761%. Percentage represents any fraction expressed out of 100. It's calculated using the formula: If A is to be expressed as a percentage of B, the formula is A/B * 100. In this case, the paid price for the sweater is $36.20 and the original price is $90.50. We endeavor to find out what percentage reflects the sale price of the sweater. Mathematically, this can be framed as what is 36.20% of 90.5, which translates to (price paid/original price) * 100, and mathematically results in ($36.20/$90.50) * 100 = 32.761. Thus, this indicates that the sweater was sold for 32.761% off its original price.
4 0
17 days ago
Harry owes the bank money. To repay his debt, he paid \$150$150dollar sign, 150 back to the bank each month. After 101010 months
Zina [12379]


$8,400
Explanation:
Monthly repayment = $150
Total Months of repayment = 10 months
Remaining balance after 10 months = $6900
Cumulative payment = $150 × 10 = $1500
Balance remaining = $6900
Overall debt amount:
(Remaining amount + total repaid)
$(6900 + 1500)
7 0
13 days ago
Other questions:
  • Two thirds a number plus 4 is 7
    6·2 answers
  • The sale price S (in dollars) of an item is given by the formula S=L−rL, where L is the list price (in dollars) and r is the dis
    11·2 answers
  • Graph a parabola whose xxx-intercepts are at x=-3x=−3x, equals, minus, 3 and x=5x=5x, equals, 5 and whose minimum value is y=-4y
    7·1 answer
  • If 35% of a natural area is to be developed, leaving 500 acres untouched, how many acres are to be developed?
    7·2 answers
  • The cost of soup, s, varies directly with the number of cans, c. When c is 4, the cost is $3. Which graph represents the cost of
    8·2 answers
  • Tia made a scale drawing of the White House for her history project. The actual length of the building is 168 feet, and its widt
    8·2 answers
  • The weights of five grapefruits are 7 47 ounces, 7.23 ounces, 6.46 ounces, 7.48 ounces, and 6.81 ounces. Using the
    13·2 answers
  • a local library shows movies on Thursday evening.the library administrator has chosen the next 6 movies he will show , but he ha
    6·2 answers
  • Graph the line that represents a proportional relationship between Y And x where the unit rate of change of y with their respect
    15·1 answer
  • Find the height h of a cone with volume V = 32π cm3 and radius r = 4 cm.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!