Correct answers only ! i only have two attempts on this assignment.
a person changed the size of the wheels on his motorcycle.
he changed the size from a tire that had a 25 inch diameter to a tire that has a 28 inch diameter. he didn’t realize this would affect his speedometer and odometer. he didn’t recalibrate either after changing the wheel size. how far did he really travel on the new tires, if his odometer shows he traveled 1000 miles?
a. 1,120 miles
b. 1,440 miles
c. 28,000 miles
d. 1,000 miles

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.