Sample standard deviation of a particular model
Suppose a previous study has shown the sample standard deviation of a particular model of automobile to be 3.12 mpg. How large a sample is necessary to estimate the mean miles per gallon to within 0.25 mpg with 95% confidence?
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A cylinder with mass M=.225kg slides down a long vertical tube. The tube is lubricated with a thin layer of glycerin at T=30C in the gap between the cylinder and the tube.
The sound transducer (generator) is circular with a radius of 1.95 cm, and it produces a sound intensity of 6.48 × 103 W/m2. How much time is required for the transducer to emit 5080 J of sound energy?
A company makes electric motors. The probability an electric motor is defective is 0.01. What is the probability that a sample of 300 electric motors will contain exactly 5 defective motors?
The results you get from ginput will need to be rounded to the nearest integer so you can use them to index your data (use the round function).
When a solid cylindrical rod is connected across a fixed potential difference, a current I flows through the rod.
Describe what is meant by a binomial experiment. How do binomial experiments apply to each of the four probability distributions covered in Chapter 3?
Consider a 20-L evacuated rigid bottle that is surrounded by the atmosphere at 100 kPa and 27 Celsius. A valve at the neck of the bottle is now opened and the atmospheric air is allowed to flow into the bottle.
An fcc iron-carbon alloy initially containing .2 wt% carbon is carburized at an elevated temperature and in an atmosphere where in the surface carbon concentration is maintained at 1.0 wt%.
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