INFORMATION:
We know that:
- The administration decided to conduct a survey of parents with children in grades K through 4 to determine if there was community interest in making the start time earlier.
- From the list of all parents with children in kindergarten through fourth grade at Franklin Elementary, they randomly selected 200 and mailed them surveys
And we must determine what type of sampling method Franklin Elementary School used.
STEP BY STEP EXPLANATION:
To determine it, we need to use the next info:
- Convenience sample: The researcher chooses a sample that is readily available in some non-random way.
- simple random sample: is a subset of a statistical population in which each member of the subset has an equal probability of being chosen.
- Cluster random sample: The population is first split into groups. The overall sample consists of every member from some of the groups. The groups are selected at random.
- Systematic random sample: Members of the population are put in some order. A starting point is selected at random, and every nth member is selected to be in the sample.
Since in this case, From the list of all parents with children in kindergarten through fourth grade at Franklin Elementary, they randomly selected 200 and mailed them surveys. That means each member of the subset has an equal probability of being chosen. Then, this is an example of simple random sample.
ANSWER:
simple random sample.