Solve the Problem $X$ Determine $n , \sum x _ { i }$

question 193

Multiple Choice

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations.
-A scientist used the following data set showing the weight in pounds gained (or lost) by a sample of eight laboratory animals given Drug $X$ . Determine $n , \sum x _ { i }$ , and $\bar { x }$ .

• A)
• \(\begin{array} { r r r r } 8.9 & - 7.5 & 2.1 & 3.0 \\ - 2.9 & 2.4 & 5.7 & - 5.4 \end{array}\) \(\mathrm { n } = 8\);
• \(\begin{array}{l}
• \sum \mathrm{x}_{i}=6.3 \\
• \overline{\mathrm{x}}=0.79
• \end{array}\)
• B) \(\mathrm { n } = 10\);
• \(\begin{array}{l}
• \sum \mathrm{x}_{i}=6.3 \\
• \overline{\mathrm{x}}=0.79
• \end{array}\)
• C) \(\mathrm { n } = 10\);
• \(\begin{array}{l}
• \sum \mathrm{x}_{i}=6.3 \\
• \overline{\mathrm{x}}=0.79
• \end{array}\).
• D) \(\mathrm { n } = 8\);
• \(\begin{array}{l}
• \sum \mathrm{x}_{i}=6.3 \\
• \overline{\mathrm{x}}=0.79
• \end{array}\).

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