Please help 20 points: Three runners are training for a marathon one day they all run about ten miles, each at their own constant speed Each runner’s data is represented

Choose all the apply/select all the true statements:

1. The fastest runner can run 2 miles in 20 minutes

2.Runner 2 is the fastest

3.Runner 1 is the fastest

4. the fastest runner can run 2 miles in 24 minutes

5. The fastest runner can run 2 miles in 19 minutes
6. Runner 3 is the fastest

7. The fastest runner can run 2 miles in 12 minutes

Please help also don’t comment if you don’t know

Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.