A production process is checked periodically by a quality control inspector. The inspector selects simple random samples of 30 f
inished products and computes the sample mean product weights x¯. If test results over a long period of time show that 5% of x¯ the values are over 2.1 pounds and 5% are under 1.9 pounds, what are the mean and the standard deviation for the population of products produced with this process?
1 answer:
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Answer:
(C)51.4 degrees
Step-by-step explanation:
The sum of the exterior angle of a polygon is 360 degrees. (one complete revolution).
Given a regular polygon, the sum of each exterior angle is calculated using the formula:
where n is the number of sides.
The regular polygon shown made by the ant has 7 sides.
Therefore:
Each exterior angle
Therefore:
The value of A correct to 1 decimal place is 51.4 degrees.
The correct option is C.