An Automatic Coffee Vending Machine Dispenses a Different Amount of Coffee

question 78

Essay

An automatic coffee vending machine dispenses a different amount of coffee in ounces for each cup. Assume the nine measurements below were taken from a population with a normal distribution.
6.5, 6.0, 6.9, 6.2, 6.1, 6.6, 6.8, 6.0, 6.1
Construct an 80% confidence interval for the mean amount of ounces that is dispensed for all cups of coffee from this machine. Interpret the interval in part (a).
a. What is the 80% confidence interval (CI)?
CI = ______________ Enter (n1, n2)
Interpret the interval:
________________________________________________________

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Definitions:

Defense Mechanism

Psychological strategies used unconsciously to protect oneself from anxiety arising from unacceptable thoughts or feelings.

Denial

A defense mechanism where a person refuses to accept reality or facts, effectively blocking external events from awareness.

Refusal To Believe

The act of deliberately choosing not to accept or acknowledge information or facts, often despite evidence to the contrary, which can stem from various cognitive or emotional reasons.

Defense Mechanism

A psychological strategy unconsciously used to protect a person from anxiety arising from unacceptable thoughts or feelings.