Test the indicated claim about the means of two populations. Assume that the two samples are independent and that they have been randomly selected.
-Two types of flares are tested for their burning times (in minutes)and sample results are given below. $$\begin{array} { l l l }
\text { Brand } \mathrm { X }& { \text { Brand } \mathrm { Y } } \
\hline n=35 & \overline { \mathrm { n } } = 40 \
\overline { \mathrm { x } } = 19.4 & \overline { \mathrm { x } } = 15.1 \
\mathrm {~s} = 1.4 & \mathrm {~s} = 0.8
\end{array}$$ Refer to the sample data to test the claim that the two populations have equal means. Use a 0.05 significance level.

Question

Test the indicated claim about the means of two populations. Assume that the two samples are independent and that they have been randomly selected.
-Two types of flares are tested for their burning times (in minutes)and sample results are given below. $$\begin{array} { l l l } 
\text { Brand } \mathrm { X }& { \text { Brand } \mathrm { Y } } \
\hline  n=35 &  \overline { \mathrm { n } } = 40 \
\overline { \mathrm { x } } = 19.4 &  \overline { \mathrm { x } } = 15.1 \
\mathrm {~s} = 1.4 &  \mathrm {~s} = 0.8
\end{array}$$ Refer to the sample data to test the claim that the two populations have equal means. Use a 0.05 significance level.

Quizplus · Accepted Answer

The Answer of Test the indicated claim about the means of two populations. Assume that the two samples are independent and that they have been randomly selected.
-Two types of flares are tested for their burning times (in minutes)and sample results are given below. $$\begin{array} { l l l } 
\text { Brand } \mathrm { X }& { \text { Brand } \mathrm { Y } } \
\hline  n=35 &  \overline { \mathrm { n } } = 40 \
\overline { \mathrm { x } } = 19.4 &  \overline { \mathrm { x } } = 15.1 \
\mathrm {~s} = 1.4 &  \mathrm {~s} = 0.8
\end{array}$$ Refer to the sample data to test the claim that the two populations have equal means. Use a 0.05 significance level.

Test the Indicated Claim About the Means of Two Populations