A Tungsten Wire Is Used to Determine the Melting Point

question 54

Multiple Choice

A tungsten wire is used to determine the melting point of indium.The resistance of the tungsten wire is 3.000 Ω at 20.0°C and increases to 4.850 Ω as the indium starts to melt.α_tungsten = 4.50 × 10−³ (°C) −¹.What is the melting temperature of indium?

• A)132°C
• B)157°C
• C)351°C
• D)731°C

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Definitions:

Null Hypothesis

A default premise stating no statistical significance or effect, used as a starting point for hypothesis testing to be either rejected or not rejected.

Z Statistic

A statistical measure that quantifies the distance (in standard deviation units) a data point is from the mean of a data set.

Normal Distribution

Normal Distribution is a continuous probability distribution characterized by a symmetric, bell-shaped curve, where mean, median, and mode are equal.

Two-tailed Hypothesis Test

A statistical test in which the critical area of a distribution is two-sided and tests whether a sample is greater than or less than a certain range of values.