Mathematics, 17.12.2019 03:31 dondre54
An inventor has developed a new, energy-efficient lawn mower engine. he claims that the engine will run continuously for 5 hours (300 minutes) on a single gallon of regular gasoline. suppose simple random samples of 500 engines were tested. the engines run for an average of 295 minutes, with a standard deviation of 20 minutes. test the claim that the run time differs from 300 minutes. use a 0.05 level of significance a) set up test hypothesis b) write test statistics and sketch c) apply classical or p-value method d) draw conclusion and interpret.
Answers: 1
Mathematics, 21.06.2019 15:40
Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.
Answers: 1
Mathematics, 21.06.2019 18:30
Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?
Answers: 3
Mathematics, 21.06.2019 19:30
Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11
Answers: 1
An inventor has developed a new, energy-efficient lawn mower engine. he claims that the engine will...
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