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A sample of 35 textbooks was taken from the TCU bookstore. The average price of the books was $52.50 with a standard deviation (S) of $5.10. Forty textbooks were sampled from the SMU bookstore. The average price of those 40 books was $65.00 with a variance (S2) of $18.06. Calculate a 90% confidence interval for the difference in the average prices for the two stores. Explain your findings.
The probability of a bit error in a memoryless binary symmetric communication channel is 10^-3. Find the probability of a block of 1000 bits
Give the mean and standard deviation for the coin variable and compare these to the mean and standard deviation for the binomial distribution that was calculate in question 5. explain how they are related. mean=np, standard deviation
The base of an aquarium with volume V = 220 is made of slate and the sides are made of glass. If slate costs five times as much (per unit area) as glass, find the dimensions of the aquarium that minimize the cost of the materials.
explain the mathematical relationship between fracturing and earth
A plane is heading due south with an airspeed of 288 mph. A wind from a direction of 58° is blowing at 20 mph. Find the bearing of the plane.
at the ACE security company, each ID badge has 3 letters which appear consecutively and alphabetically in order, followed by 3 digits from 1 through 7 with no repitition and in any order. How many different ID badges are possible?
Wiiand Corporation has 50,000 shares of $10 par value common stock outstanding. It declares a 10% stock dividend on december 1 when the market value per share is $16.
Find derivatives of the given functions using differentiation rules and find the derivative of the given function
An auto manufacturer has 3 different subcompact cars in the line. Customers selecting one of these cars have a choice of 3 engine sizes, 4 body styles, and 3 color schemes. How many different selections can a customer make?
A building is 282 feet tall. For a class project, Kari is to make a scale model of the building to place in the front hall display case. The display case is 22 inches tall. Which scale will allow her to make the tallest model that will fit in the ..
Determine whether the function has an inverse. If it does find it's inverse.
United States imports increased 20 percent and exports decreased 10 percent during a certain year, the ratio of imports to exports at the end of the year was how many times the ratio
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