A Grocery Store Is Interested in Determining Whether or Not $\mu \mathrm { TC }$

question 16

Multiple Choice

A grocery store is interested in determining whether or not a difference exists between the shelf life of Tasty Choice doughnuts and Sugar Twist doughnuts.A random sample of 100 boxes of each brand was selected and the mean shelf life in days was determined for each brand.A 98% confidence interval for the difference of the means, $\mu \mathrm { TC }$ - $\mu \mathrm { ST }$ ,was determined to be (1.1,2.8) .

• A)We are 98% confident that a randomly selected box of Tasty Choice doughnuts will have a shelf life that is between 1.1 and 2.8 days longer than a randomly selected box of Sugar Twist doughnuts.
• B)Based on this sample,we are 98% confident that Sugar Twist doughnuts will last on average between 1.1 and 2.8 days longer than Tasty Choice doughnuts.
• C)Based on this sample,we are 98% confident that Tasty Choice doughnuts will last on average between 1.1 and 2.8 days longer than Sugar Twist doughnuts.
• D)Based on this sample,we know that 98% of Tasty Choice doughnuts last between 1.1 and 2.8 days longer than Sugar Twist doughnuts.
• E)We know that 98% of all random samples taken from the population will show that the mean shelf life of Tasty Choice doughnuts is between 1.1 and 2.8 days longer than the mean shelf life of Sugar Twist doughnuts.

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Definitions:

Biodiversity

The variety of life in all its forms and ecosystems, including genetic, species, and ecosystem diversity.

Public Lands

Areas owned and maintained by the government for the use and benefit of the general public.

Earth's Ecosystems

The complex networks of living organisms and their physical environment present on Earth, interacting as a system and including both natural and human-modified ecosystems.

Wilderness Areas

Natural environments on Earth that have not been significantly modified by human activity, designated for conservation and as habitats for numerous species.