Question

Identify the type of sampling used: random,systematic,convenience, stratified or cluster.

Answer 1

Answer: Systematic random sampling.

Step-by-step explanation:

As per given ,

Objective :To estimate the percentage of defects in a recent manufacturing batch.

Action of quality control manager : He selects every 13th van that comes off the assembly line starting with the tenth until she obtains a sample of 70 vans.

Since she if following a systematic trend to select van with a fixed period of 13, therefore the sampling method is systematic random sampling.

• A systematic sampling technique is a kind of random sampling technique in which participants from the entire population are selected by to a random initial point but a fixed periodic interval k.