Overview
The research department of an appliance
manufacturing firm has developed a new bimetallic thermal sensor for its
toaster. The new bimetallic thermal sensor can sense the temperature of the bread
and move the lever arm to activate the switch. The research department claims
that the new bimetallic thermal sensor will reduce appliance returns under the
one-year full warranty by 2%–6%. To determine if the claim can be supported,
the testing department selects a group of the toasters manufactured with the
new bimetallic thermal sensor and a group with the old thermal sensor and
subjects them to a normal year’s worth of wear. Out of 250 toasters tested with
the new bimetallic thermal sensor, 8 would have been returned. Seventeen would
have been returned out of the 250 toasters with the old thermal sensor. As the
manager of the appliance manufacturing process, use a statistical procedure to
verify or refute the research department’s claim.
Instructions
Create 8–10 slides, including a cover and
a sources list, for a presentation to the director of the manufacturing plant
in which you:
Summarize the problem with the appliance manufacturing firm's toaster.
Propose the statistical inference to use to solve the problem. Support
your decision using a scholarly reference.
Using Excel:
Develop a flowchart for the proposed statistical inference, including
specific steps.
Compute all statistical calculations.
Place your flowchart in a slide.
Determine if you can verify or refute the research department's claim.
Choose sources that are credible, relevant, and appropriate. Cite each
source listed on your source page at least one time within your assignment. For
help with research, writing, and citation, access the library or review library
guides.
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