Upper A baseball organization tests players to see whether they are using performance-enhancing drugs. Officials select a team at random, and a drug-testing crew shows up unannounced to test all 31 players on the team. Each testing day can be considered a study of drug use. Complete parts a and b.

Cluster sampling

No

Step-by-step explanation:

Missing part of Question

Find:

a) Which type of sample is this?

b) Is it the correct choice ?

Solution:

- Simple random sample is the one in which every individual would have equal chance of being selected.

- Stratified random sample draws simple random sample from the independent sub-groups.

- Systematic sampling is letting every kth individual be in the sample ( k as an integer )

- Convenience sampling is used for example voluntary response or a sub-group from the population.

a)

Cluster sampling was used in our case because one of all the teams were chosen and this entire team is in this sample.

b)

No. This method has limitation of giving us a shortsighted view which lacks the overview on the use of performance-enhancing drugs, we can only use this sample to draw conclusions on the team.

21

step-by-step explanation:

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40