Construct a 95% Z-Interval or a 95% T-Interval About the Population

question 29

Multiple Choice

Construct a 95% Z-interval or a 95% t-interval about the population mean. Assume the data come from a population that
is approximately normal with no outliers.
-Fifteen randomly selected men were asked to run on a treadmill for 6 minutes. After the 6 minutes, their pulses were measured and the following data were obtained:
$\begin{array}{rrrrr}105 & 94 & 98 & 88 & 104 \\\hline 101 & 99 & 85 & 84 & 124 \\\hline 122 & 114 & 97 & 101 & 90\end{array}$

• A) \(( 93.7,107.1 )\); we are \(95 \%\) confident that the mean pulse rate of men after 6 minutes of exercise is between \(93.7\) and \(107.1\) beats per minute.
• B) \(( 94.9,105.9 )\); we are \(95 \%\) confident that the mean pulse rate of men after 6 minutes of exercise is between \(94.9\) and \(105.9\) beats per minute.
• C) \(( 94.2,106.6 )\); we are \(95 \%\) confident that the mean pulse rate of men after 6 minutes of exercise is between \(94.2\) and \(106.6\) beats per minute.
• D) \(( 95.2,105.6 )\); we are \(95 \%\) confident that the mean pulse rate of men after 6 minutes of exercise is between \(95.2\) and \(105.6\) beats per minute.

Understand the basic principles of domestic supply and demand in the absence of international trade.

Determine whether a country will become an importer or exporter given the domestic and world prices.

Analyze the impact of trade on consumer surplus, producer surplus, and total surplus.

Understand the concept of comparative advantage in international trade.

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