A researcher believes there is a difference in the mean number of days before visible results begin to show among three

[answerhappygod]

A researcher believes there is a difference in the mean number
of days before visible results begin to show among three types of
facial creams that reduce wrinkle lines. Several consumers are
randomly selected and given one of the three creams. Each
participant then recorded the number of days it took to see
results. The results are shown in the table. Based on these data,
can you conclude that there is a difference between the mean number
of days for these three creams? Use a 0.05 level of significance
and assume the population distributions are approximately normal
with equal population variances. Cream #1 Cream #2 Cream #3 12 17
16 15 15 13 16 18 12 14 15 16 12 19 11 10 Step 1 of 2 : Compute the
value of the test statistic. Round any intermediate calculations to
at least six decimal places, and round your final answer to four
decimal places