Laundry Detergent Preference Narrative
A consumer would like to know if there is a difference in the performance of three different laundry detergents. Eighteen pieces of white cloth were soiled with grape juice then washed in one of the three detergents A, B, or C. The resulting whiteness readings are listed below, where the larger number indicates whiter fabric. 
-Refer to Laundry Detergent Preference Narrative. Develop and interpret a 95% confidence interval for 
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Definitions:
Exponential Equation
An equation in which the variable appears as an exponent.
Decimal Places
The number of digits to the right of the decimal point in a decimal number.
Logarithmic Equation
An equation involving logarithms, which represents the exponent to which the base of the logarithm must be raised to yield a given number.
Decimal Places
The positions to the right of the decimal point in a number, indicating fractions of ten.
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