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In an instrumentation system, there is a need to take the difference between two signals, one of v1 = 2sin(2π × 60t) + 0.01 sin(2π × 1000t) volts and another of v2 = 2sin(2π ×60t)-0.01 sin(2π ×1000t) volts. Draw a circuit that finds the required difference using two op amps and mainly 100-kΩ resistors. Since it is desirable to amplify the 1000-Hz component in the process, arrange to provide an overall gain of 100 as well. The op amps available are ideal except that their output voltage swing is limited to ±10 V.
Assume we know the length of time a battery will hold a charge is a normal distribution with a mean of 50 hours and a standard deviation of 15 hours.
1. Using the Internet resources, find an example of a linear optimization model used in industry. Describe which industry it is or was used in and briefly discuss the problem or challenge it addressed.
A hypothesis is being conducted. The p-value was found to be 0.0768. For which of the following levels of significance will the null hypothesis be rejected?
They have recorded the steady increase of the sales of these walking slippers every month. They want to figure out the upward trend in sales so they create a trend line and use linear analysis to use the slope of the line to predict sales in futur..
The number of runs with respect to the sample median is:
How large a sample should he take to be within 200£ of the actual average with 99% confidence? He assumes the standard deviation of total monthly deposits for all customers is about 1000£.
A professor continually gives exams to her students. She can give three possi- ble types of exams, and her class is graded as either having done well or badly. Let pi denote the probability that the class does well on a type i exam,
Sales manager wishes to award sales representatives who earn the largest commissions a bonus of= $1,000 .He can award bonus to 20% of representatives. Determine cutoff point between those who earn bonus and those who don't?
A probability value of .25 means that an event will occur:
A cabinet has 3 identical drawers. One drawer contains 2 gold coins, another drawer has a gold coin and a silver coin, and the third drawer has 2 silver coins. (a) What is the chance you get a gold coin?
a particular multiple regression model has 3 independent variables the sum of the squared error is 7680 and the total
on average there is one flaw per 1000 feet of pipe. what is the probability that there is exactly one flaw in only
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