An Injector Molder Produces Plastic Pens

question 53

Multiple Choice

An injector molder produces plastic pens. The process is designed to produce pens with a mean weight of 0.250 grams. To investigate whether the injection molder is operating satisfactorily, 40 pens were randomly sample with a mean of 0.2525g and a standard deviation of .0022g.
-The appropriate hypotheses to test that the process is performing satisfactorily is _____.

• A)H ₀: µ ? 0.250 H_a :µ < 0.250
• B)H ₀ :µ = 0.250 H_a :µ ? 0.250
• C)H ₀ :µ ? 0.250 H_a :µ > 0.250
• D)H ₀: µ ? 0.250 H_a :µ = 0.250
• E)H ₀ :µ ? 0.2525 H_a :µ > 0.2525

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Definitions:

Glucose

A simple sugar that is an important energy source in living organisms and a component of many carbohydrates.

Aldosterone

Aldosterone is a hormone produced by the adrenal glands that helps regulate blood pressure by controlling sodium and potassium levels in the blood.

Long-term Regulation

The processes and mechanisms that the body uses to maintain stable internal conditions over long periods.

Blood Sugar Level

The concentration of glucose present in the blood, critical for maintaining energy levels and overall health, regulated by hormonal mechanisms.