To estimate the percentage of defects in a recent manufacturing batch, a quality control manager at General Electric selects every 19th refrigerator that comes off the assembly line starting with the seventh until she obtains a sample of 70 refrigerators. What type of sampling is used? (a) Simple random (b) Systematic (c) Cluster (d) Convenience (e) Stratified

Option B - Systemic

Step-by-step explanation:

Looking at the question and the options, i can tell it is a systematic random sampling.

This is because, a systematic random sampling is a type of sampling method where samples are chosen from a larger population based on a random beginning point that has a definite and periodic interval.

We are told that a quality control manager selects every 19th refrigerator that comes off the assembly line starting with the sixth until she obtains a sample of 70 refrigerators.

This means that;

Periodic interval is Every 19th

Beginning point is every 7th

Sample size is 70

Hence, this type of sampling is a systematic random sampling.

answer: it's upside down and i can't read it

step-by-step explanation:

“ a line segment that has the endpoints on the circle and passes through the midpoint is called the diameter. the diameter is twice the size of the radius. a line segment that has its endpoints on the circular border but does not pass through the midpoint is called a chord. a circle is the same as 360 small circle up the number 0 . i hope this .