In a Study of Reaction Times, the Time to Respond

question 44

Multiple Choice

In a study of reaction times, the time to respond to a visual stimulus (x) and the time to respond to an auditory stimulus (y) were recorded for each of 8 subjects. Times were measured in thousandths Of a second. The results are presented in the following table.

$\begin{array} { c c } \hline \text { Visual } & \text { Auditory } \\\hline 193 & 189 \\240 & 222 \\239 & 226 \\236 & 225 \\200 & 189 \\161 & 158 \\214 & 209 \\204 & 193 \\\hline\end{array}$

Construct a 95% confidence interval for the slope of the least-squares regression line.

• A) (21.1376, 21.3239)
• B) (0.7611, 0.9474)
• C) (21.1134, 21.3481)
• D) (0.7370, 0.9716)

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Definitions:

Endosperm

Nutritive tissue within seeds of flowering plants, providing sustenance to the developing embryo during germination.

Seedling's Growth

The developmental phase in plants from germination through to the establishment of the plant, characterized by rapid growth and the formation of true leaves.

Female Gametophyte

The haploid phase in plants that produces female gametes or eggs, part of the alternation of generations in the plant life cycle.

Embryo Sac

The female gametophyte within the ovules of flowering plants, where fertilization occurs and seeds are formed.