Question

As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of 4 brands of bicycles. She took 3 of each brand and determined their maximum downhill speeds. The results are presented in miles per hour in the table. Referring to the table, the null hypothesis that the mean downhill coasting speeds of the 4 brands of bicycles are equal will be rejected at a level of significance of 0.05 if the value of the test statistic is greater than ___________________.

Trial	Barth	Tornado	Reiser	Shaw
1	43	37	41	43
2	46	38	45	45
3	43	39	42	46

Answer 1

Here k = 4

N= 4*3 = 12

DF1 = k-1 = 3

DF2 = N-k = 12-4 = 8

Ans : 4.07