A cone has a diameter of 8 units and a height of 8 units.
Its radius is (blank) units, and its volume is (blank) cubic units. A cylinder with the same height and radius as the cone will have a volume of (blank) cubic units. If a sphere has the same radius as the cylinder, its volume is (blank) the volume of the cylinder. Answers for the first blank: 2,4,8,16 Answers for the second blank: 66.99, 133.97, 401.92, 535.89 Answers for the third blank: (same as the second blank answers) Answers for the fourth blank : Half, Two-thirds, Four-thirds

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.