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) \(12.32 \pm 2.262 ( 1.88 / \sqrt { 10 } )\)

---

Definitions:

Exclusive Dealing

An agreement between a supplier and a retailer or distributor in which the retailer agrees to only purchase from that supplier and not from its competitors.

Full-Line Forcing

A business practice where a supplier requires retailers to stock an entire range of products in order to carry any of the supplier's items.

Tying Arrangement

A business practice where the sale of one product (the tying product) is conditioned on the purchase of another product (the tied product).

Supplier

A supplier is a business or individual that provides goods or services to another company or entity, typically as part of a supply chain.