I will add the length and convert it to yards and then subtract it from 4/6 yards.
The correct answer is B. Stratified sampling is used since the field is divided into subplots and a random sample is taken from each subplot.
Explanation:
Sampling refers to the process followed by researchers to select a group of individuals from a larger group; considering in most studies it is not possible to analyze all the population. In the case of stratified sampling, this involves dividing the general population into smaller groups, which are known as strata; after this, the researcher selects a specific number of individuals from each strata. This method guarantees the sample is selected randomly, and therefore the study is not biased. Stratified sampling was the method used in the example described because, in this, the general population (46-acre field) was divided into subplots that represent the strata. Also, after this, the researcher selected one random sample.
For the "system" to function, we require that

occurs (i.e. the event that either

or

function properly). This occurs with probability

but since

and

are independent,

We're given that

and

, so

If

, then
Answer:
4000
Step-by-step explanation:
Find the number in the thousand place 3 and look one place to the right for the rounding digit 6
. Round up if this number is greater than or equal to 5 and round down if it is less than 5
.
4000