Summary Statistics Are Given for Independent Simple Random Samples from Two

question 32

Multiple Choice

Summary statistics are given for independent simple random samples from two populations. Use the pooled t-intervalprocedure to obtain the specified confidence interval.
- $\overline { \mathrm { x } } _ { 1 } = 71.6 , \mathrm {~s} _ { 1 } = 3.9 , \mathrm { n } _ { 1 } = 11 , \overline { \mathrm { x } } _ { 2 } = 67.9 , \mathrm {~s} _ { 2 } = 3.4 , \mathrm { n } _ { 2 } = 9$
Determine a $99 \%$ confidence interval.

• A)\(- 1.07\) to \(8.47\)
• B) \(0.38\) to \(7.02\)
• C) \(- 1.83\) to \(9.23\)
• D) \(- 0.53\) to \(7.93\)

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Definitions:

Total Revenue

The entire amount of income generated by the sale of goods or services related to a company's primary operations.

Variable Costs

Expenses that change in proportion to the activity of a business, such as costs for raw materials or labor.

Fixed Costs

Fixed Costs are business expenses that do not change with the level of goods or services produced by the company.

Marginal Cost

The additional cost incurred by producing one more unit of a good or service.