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A production manager is interested in comparing the precision of two brands of stamping machines.From a random sample of 12 units of output from the Brand A machine,a standard deviation of 15.2 is reported for a quality characteristic.For the Brand B machine,in a sample of 20 units of output,there is a standard deviation of 10.1.Is there sufficient evidence at the 5% significance level to conclude that Brand B machines have a lower variance in quality? Assume that the quality characteristic of both machines follows a normal distribution.
Sleeper Effect
A delayed increase in the impact of a message that occurs when an initially discounted message becomes effective, as we forget its source or its source becomes less important over time.
Internal Attribution
The inference that a person's behavior is due to personal factors like character, motive, or belief.
Consistency Information
Information that supports the reliability or stability of a person's behavior or attitudes over time.
Fundamental Attribution Error
The tendency to overestimate the effect of personality or disposition and underestimate the effect of the situation in explaining social behavior.
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