Please help me! As hamsters age, they can develop a disease with a side effect of severe diarrhea. Hamsters with this side effect experience severe dehydration from the diarrhea, which can be fatal. A study is to be conducted to determine which of two antibiotics, Baytril or Albon, is more effective as a remedy for combating this side effect. Researchers will randomly select 300 hamsters from 10 different large veterinary practices around the country. All the hamsters will be more than 1 year old, and their owners have given consent to participate in the study. Changes in symptoms will be evaluated after six months of treatment.

Part A: What would be an advantage of adding a control group to the design of the study? (2 points)

Part B: Assuming a control group is added, explain how you would assign the 300 hamsters to the three treatment groups for a completely randomized design. (4 points)

Part C: Rather than using a completely randomized design, one group of researchers proposes blocking on veterinary clinics whereas another group of researchers wants to block on breed of hamster. How would you decide which one of these two variables to use as a blocking variable? (4 points) (10 points)

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

d. vertex

step-by-step explanation:

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!