Randomly selected students were given five seconds to estimate the value of a product of numbers with the results shown below.

Estimates from students given $1 \times 2 \times 3 \times 4 \times 5 \times 6 \times 7 \times 8$: $$50, \ 1252, \ 25, \ 856, \ 800, \ 10000, \ 800, \ 2000, \ 500, \ 200$$

Estimates from students given $8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1$: $$377, \ 49000, \ 1876, \ 200, \ 1500, \ 225, \ 1500, \ 400, \ 5000, \ 3600$$
Use a $0.05$ significance level to test the claim that the two populations have the same mean.

(a) The test statistic is .

(b) The conclusion is

A. There is sufficient evidence to warrant the rejection of the claim that the two populations have the same mean
B. There is not sufficient evidence to warrant the rejection of the claim that the two populations have the same mean