Conditional probability
Consider a roulette wheel with 18 red, 18 black, and 2 green spaces. If we only consider 1 spin, the conditional probability that it lands on red - given that it does not land on black is?
A) 0.10
B) 0.375
C) 0.50
D) 0.90
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Determine (a) the compressor power, in kW, (b) the refrigerating capacity, in tons(1 ton of refrigeration=3.52 kW), and (c) the coefficient of performance. Show the cycle on a T-s diagram.
How would you characterize the degree of correlation between X and Y. moderate, negative correlation
A baseball has a mass of about 155 g. What is the magnitude of the momentum of a baseball thrown at a speed of 98 miles per hour? (Note that you need to convert mass to kilograms and speed to meters/second. A mile is 1.6 kilometers or 1600 meters.
Suppose that due to the cost of a survey, you must reduce your random sample from 100 to 64. Which of the following statements is true? The margin of error for our 99% confidence interval would increase.
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What are the null and alternative hypotheses? What is the value of the test statistic? What is the P-value of the test statistic? Is their experience evidence that the tutoring program has been effective?
A 249-gram sample of water is heated from 2 degrees C to 85degrees C. Calculate the amount of heat absorbed (in kJ) by the water.
A laboratory test shows that the saturation pressure at -31 deg C is 0.9 bar and the saturation pressure at -29 deg C is 1.1 bar. If the mass flow rate of refrigerant is 0.01 m^3/s, find the refrigeration capacity in kW.
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