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In polluted areas of Texas, registered vehicles must undergo an annual emissions inspection. In Fort Bend County (near Houston), 27 vehicles failed the emissions test, from among 200 randomly selected vehicles.
(a) Does this data provide compelling evidence for concluding that more than 10% of all Fort Bend County vehicles will fail the emissions test? State and test the appropriate hypotheses using a significance level of .05. In reaching your conclusion, what type of error might you have committed?
(b) Repeat the test in part (a) using a significance level of 0.25. In reaching your conclusion, what type of error might you have committed?
(c) If it is really the case that 15% of all Fort Bend County vehicles fail the emissions test, how many vehicles would have to be tested to have probability of type II error equal to 10% for the test in part (b)?
A boad initially stationary at water,fires a shell in i direction,The shell's air speed =822 m/s.The shell was in the gu8n for .16s, and the force exerted on the shell decrease linearly fromthe initial force to zero over the firing interval.
how much water horsepower is required to pump 380 gpm against a total head of 420 feet. If the efficiency in the above problem is 85 percent and the pump efficiency is 80 percent. Calculate the required horsepower.
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A 50 mg-50 Pb alloy is cooled slowly from 700 C to room temperature, a) Calculate the mass fractions of the phase present at 700 C
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