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Three currents are represented by i1=25coswt, i2 = 20 sin (wt-π/2), i3 = 15 sin (wt-π/6). Find the value of resultant current and phase angle. Write the equation of resultant current.
Define an appropriate probability model (feel free to bounce ideas during office hour to make sure you are in the right track).
What is the coefficient of determination and what does it tell us about the relationship between two variables?- For a set of data, r2 is 0.64 and the variables x and y are inversely related. What is the numerical value of r?
Psychological response of firefighters. The Journal of Human Stress (Summer 1987) reported on a study of ‘‘psychological response of firefighters to chemical.
Metabolic rate and body mass for caterpillars. Use the output provided in Example 28.10 (page 28-20) to answer the questions below. (a) Find a 95% confidence interval for the slope parameter ß for caterpillars during Stage 4.
The coach would like the first, second, and third places to go to the team members.
It is known that in a sack of mixed bean seeds, 35% are yellow beans. Use the normal approximation to the binomial distribution to find the probability that in a sample of 400 beans there are
question a certain company makes a laboratory microscopes. setting up each production run costs 2500. insurance costs
the majority (more than 50%) are smoking a year after the treatment. Do these results suggest that the nicotine patch therapy is not effective?
Consider selecting one card at a time from a 52-card deck. What is the probability that the first card is from the suit of hearts and the second card is also from the suit of hearts? (Note there are 13 cards from the suit f hearts in a deck of ca..
a corporation creates a sinking fund in order to have 980000 to replace some machinery in 9 years. how much should be
Find a lower bound for the probability that the student's score will fall between 65 and 75 - If 100 students take the final, find a lower bound for the probability that the class average will fall between 65 and 75.
Look at the shape of the binomial distribution for various combinations of n and p. Speci?cally, let n = 5 and try p = 0.2, 0.5, and 0.8. Repeat the same for other values of n. Can you say something about how the skewness of the distribution is affec..
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