A Wildlife Biologist Wants to Determine the Mean Weight of Adult

question 143

Multiple Choice

A wildlife biologist wants to determine the mean weight of adult red squirrels. She captures 10 Squirrels she believes to be representative of the species and weighs them, finding a mean of 12.32 Grams and standard deviation of 1.88 gm. Assuming these squirrels can be considered a random Sample of all red squirrels which of the following formulas gives a 95% confidence interval for the Mean weight of all squirrels?

• A) \(12.32 \pm 2.268 ( 1.88 / \sqrt { 9 } )\)
• B) \(12.32 \pm 1.96 ( 1.88 / \sqrt { 10 } )\)
• C) \(12.32 \pm 2.228 ( 1.88 / \sqrt { 10 } )\)
• D) \(12.32 \pm 2.228 ( 1.88 / \sqrt { 9 } )\)
• E) \(12.32 \pm 2.262 ( 1.88 / \sqrt { 10 } )\)

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Definitions:

Forward Auction

An auction where an item or service is offered for sale and buyers submit ascending bids, in contrast to a reverse auction where sellers compete to provide goods or services at the lowest price.

Highest Bidder

The individual or entity willing to pay the most for an item or asset in an auction setting.

RFQ

A Request for Quotation (RFQ) is a business process in which a company asks external suppliers to offer a quote for the supply of specific goods or services under designated conditions.

Reverse Auction

An auction in which the roles of buyer and seller are reversed, with the seller competing to obtain business from the buyer and prices typically decreasing as the auction progresses.