At 7:30 AM

question 91

Short Answer

At 7:30 a.m., a mug of hot chocolate with initial temperature of C is placed on a table in a room held at C. At 8:45 a.m., the temperature of the hot chocolate is C. At what time did the temperature of the hot chocolate reach C?

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Definitions:

Z-scores

A measure that describes a value's relationship to the mean of a group of values, expressed in units of standard deviation.

Standard Normal Distribution

A probability distribution that has a mean of 0 and a standard deviation of 1, representing a standardized version of the normal distribution.

Less Than

A mathematical expression indicating that one quantity is smaller than another.