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If I switched the "if statement" in the end part of the reader in the Reader-Writer problem with the signal mutex, what would happen?
In Progress...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $27.50 with a standard deviation of $7.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 68 customers, answer the following questions.

(a) What is the likelihood the sample mean is at least $30.00? Answer: 0.0016
(b) What is the likelihood the sample mean is greater than $26.50 but less than $30.00?
Answer: 0.8794
(c) Within what limits will 90 percent of the sample means occur?
Sample mean ? and ? (couldn't figure out the answer here).
In Progress...
Develop a menu-driven program that inputs two numbers and, at the user's options, find their sum, difference, product, or quotient.
Answered!
What is the difference between various market structure, i.e., perfect competition, monopolistic competition, oligopoly, etc.? How is short run equilibrium different from long run equilibrium for firms operating in each of these markets?

What are economies of scale, diseconomies of scale, constant economies of scale, external economies, and external diseconomies?

How is a natural monopoly different from a regular monopoly?

How are natural monopolies regulated?

How could you best describe “excess capacity” that firms may experience?
In Progress...
An object that has an electric charge has
an excess or deficiency of electrons
neither one
either one
an excess or deficiency of protons
In Progress...
1. How do firms determine the profit maximizing or loss minimizing level of output?
2. What is the difference between the long run and the short run in economic analysis?
3. What is the difference between the short run supply curve and the long run supply curve of a firm?
4. What is the difference between average cost and marginal cost?
5. Under what conditions would marginal cost fall or rise?
In Progress...
A 3550 mL sample of gas at 20.0 degrees C and a pressure of 650.0 torr is allowed to expand to a volume of 8.00 L. The final pressure of the gas is 32.0 kPa. What is the final temp. in degrees celsius?
Answered!
If 4.50 g of methane gas (CH4) is introduced into an evacuated 2.00 L container at 35 degress C, what would be the pressure in atmosphere ?
Answered!
A recently filled 4.60 L gas cylinder has a pressure of 212 atm at room temp (25 degrees C). At what temp. would the gas reach the potentially dangerous pressure of 2.28 x 10^5 toss?
Answered!
If I pour 10ml of 0.5M Co(No3)2 stock solution in to a sample vial and use it to make up 4 different solutions ranging in concentration from 0.025M to 0.1M by pippetting 500, 1000, 1500 and 2000 micro-litres in to separate vials and making up to 10ml with of deionised water, what are the concentrations of each?
Answered!
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For feedback, I liked the quality of the assignment, but I would have liked more intermediary work shown that led to the final answer. Aside from this remark, everything was perfect. Thank you for your help
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