Question

A school administrator claimed that the average time spent on a school bus by those students in his school district who rode school buses was 35 minutes. A random sample of 20 students who did ride the school buses yielded an average of 42 minutes riding time with a standard deviation of 6.2 minutes. Does this sample of size 20 contain sufficient evidence to indicate that the mean riding time is greater than 35 minutes at the 5% level of significance? Solution: Step 1 Ho : u [Select ] v 35 vs. Hį: [Select 35 Step 2 df = [Select] < Step 3 t = [ Select] Step 4 critical [Select] reject Ho Step 5 Conclusion: Therefore, we [Select]

Answer 1

Answers Stepi Hoiu=35 Hou > 35 stepzi degree of freedom n-1 = 2001 19 step3² Test statistics X-M Given x = 42 ta olju o:6.2 n :20 42-35 6.2/520 5.049 stepu! caitical value of t. d: 0.05 FX/2,8 toos, at 10.025,19 11-729 slepsi Hence value of tota and here we reject to P-value- P (275.0497) Reset Hoi P-vame Ld. 0.000