When Tuning a Piano, a Technician Strikes a Tuning Fork

question 362

Multiple Choice

When tuning a piano, a technician strikes a tuning fork for the A above middle C and sets up a wave motion that can be approximated by ​
Y = 0.001 sin 850πt,
​
Where t is the time (in seconds) .
​
The frequency is given by f = 1 / p.What is the frequency of the note?
​

• A)85 cycles/sec
• B) cycles/sec
• C) cycles/sec
• D)850 cycles/sec
• E)425 cycles/sec

Learn the significance and calculation of the margin of error in confidence intervals.

Understand the conditions under which the finite population correction factor should be used.

Grasp the relationship between sample distribution characteristics, such as the t-distribution, and their impact on statistical analysis.

Understand the principles behind estimators being unbiased and their importance in statistical analysis.

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Definitions:

Apparent Authority

The impression given to third parties that an agent is authorized to act on behalf of a principal, even if such authority has not been formally granted.

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The act of informing someone through legally accepted or specified means.

Doctrine

A principle or body of principles presented for acceptance or belief, as by a religious, philosophical, scientific, or political group; policy.

Third-Party Estoppel

A legal principle that prevents a party from asserting or denying a fact due to another's act, when the third party has relied upon that act or representation.