Answer:
When selecting a sample for a survey, the way you choose your sample: <u>A) may lead to biased results</u>.
Step-by-step explanation:
The way you choose your sample matters a lot in order to help limit the bias in sampling data.
There are <em>four types</em> of <u>random</u> samples: simple, stratified, cluster, and systematic.
There are <em>two types </em>of <u>non-random</u> samples: voluntary response and convenience.
You always want to have a random sample in order to have accurate, non-biased results. Therefore, A) May lead to biased results is the best answer.
Answer:
Step-by-step explanation:
Triangle BCD is a right angle triangle.
From the given right angle triangle
BC represents the hypotenuse of the right angle triangle.
Taking 45 degrees as the reference angle,
BC represents the adjacent side of the right angle triangle.
BD represents the opposite side of the right angle triangle.
To determine BC, we would apply trigonometric ratio
Cos θ = adjacent side/hypotenuse side. Therefore,
Cos 45 = BC/2√2
√2/2 = BC/2√2
BC = 2√2 × √2/2
BC = 2