Joaquin has created a small treasure map that is in the shape of a square. He decides to make a larger version of
the map, and on this new map he increases each side by 6 inches. The area of this larger version of the map is 121
square inches. What are the dimensions of his original, smaller map?
O 5 inches by 5 inches
O 8 inches by 8 inches
O 11 inches by 11 inches
O 17 inches by 17 inches

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.