Litter sizes (number of pups) for randomly chosen dogs from two breeds were compared. The sample data were entered into Excel, and the following results were produced. $$\begin{array}{l}
\text { t-Test: Two-Sample Assuming Unequal Variances }\
\begin{array} { l r r }
\hline & \text { Dalmation } & \text { Labrador } \
\hline \text { Mean } & 4.8125 & 5.461538 \
\text { Variance } & 3.4958333 & 0.602564 \
\text { Observations } & 16 & 13 \
\text { Hypothesized Mean Diff } & 0 & \
\text { df } & 21 & \
\text { t Stat } & - 1.261183 & \
\hline
\end{array}
\end{array}$$ What is the p-value for a left-tailed test comparing the means at ? = .05?
A)Less than .10
B)More than .10
C)Between .10 and .05
D)Between .05 and .01

Question

Litter sizes (number of pups) for randomly chosen dogs from two breeds were compared. The sample data were entered into Excel, and the following results were produced. $$\begin{array}{l}
\text { t-Test: Two-Sample Assuming Unequal Variances }\
\begin{array} { l r r } 
\hline & \text { Dalmation } & \text { Labrador } \
\hline \text { Mean } & 4.8125 & 5.461538 \
\text { Variance } & 3.4958333 & 0.602564 \
\text { Observations } & 16 & 13 \
\text { Hypothesized Mean Diff } & 0 & \
\text { df } & 21 & \
\text { t Stat } & - 1.261183 & \
\hline
\end{array}
\end{array}$$ What is the p-value for a left-tailed test comparing the means at ? = .05?
A)Less than .10
B)More than .10
C)Between .10 and .05
D)Between .05 and .01

Quizplus · Accepted Answer

The t-statistic is -1.261183 with 21 degrees of freedom. For a left-tailed test, the p-value is more than 0.10, indicating that the difference in means is not statistically significant at the 0.05 level.

Litter Sizes (Number of Pups) for Randomly Chosen Dogs from Two