Engineering, 09.11.2019 06:31 maddy1276
Clifford likes dogs. he wondered how much dog owners spend on their dogs in a year. he hypothesized that dog owners spend more than $1000 a year on their dogs, on average. he sampled 75 dog owners in a local community and found that these 75 dog owners spent an average $1075 on their dogs in a year. suppose sigma subscript xequals$175. assume that these 75 dog owners are representative of all dog owners in terms of amount spent on their dogs in a year. which hypothesis test should be used?
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Engineering, 04.07.2019 18:10
Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.
Answers: 3
Engineering, 04.07.2019 18:10
The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m
Answers: 2
Engineering, 04.07.2019 19:10
Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.
Answers: 1
Clifford likes dogs. he wondered how much dog owners spend on their dogs in a year. he hypothesized...
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