Assume That the Following Confidence Interval for the Difference in the Mean

question 170

Multiple Choice

Assume that the following confidence interval for the difference in the mean time (in minutes) for male students to complete a statistics test (sample 1) and the mean time for female students to complete a statistics test (sample2) was constructed using independent simple random samples. $- 0.2 \text { minutes } < \mu _ { 1 } - \mu _ { 2 } < 2.7 \text { minutes }$ What does
The confidence interval suggest about the difference in length between male and female test completion times?

• A) Male students take longer to complete a statistics test.
• B) Female students take longer to complete a statistics test.
• C) There is no difference in the length of time for statistics test completion between male and female students.

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Definitions:

Economic Profit

The variance between cumulative revenue and aggregate outlays, covering both manifest and concealed costs.

Competitive Market

A competitive market is one in which a large number of buyers and sellers interact, leading to goods and services being offered at market-determined prices with minimal barriers to entry or exit.

Market Price

The current value at which a good or service can be bought or sold in a market.

Economic Profits

The discrepancy between a corporation's total earnings and all of its costs, covering both overt and hidden expenses.