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Suppose you selected a random sample of n = 29 measurements from a normal distribution. Compare the standard normal z value with the corresponding t value for a 95% confidence interval. A coin is flipped 6 times. The variable x represents the number of tails obtained. List the possible values of x. Is x discrete or continuous? Explain.
There are 7 women and 9 men on a faculty. How many ways are there to select a committee of 5 members if at least 1 member must be a woman?
a metal sculptor has a solid bronze sphere with a radius of 10 inches. She melts the sphere and casts a hollow sphere with an inner radius of 10 inches. What is the thickness of the shell of the hollow sphere?
Find the interest rate needed for an investment of $5800 to double in 7 yr if interest is compounded continuously. (Round your answer to two decimal places.)
What price should the company charge in order to maximize total revenue? What is the maximum revenue?
The downstream distance, D1 is 12 miles, and the upstream distance D2 is 9miles. Substitute these values in the ratio above and solve for C. Leave answer in fraction form.
suppose turtle runs at 55 ft/s. rabbit runs at 80 ft/s, but gives Turtle a 5-second head start. How many seconds will turtle have run when rabbit catches up with him
A taxi driver knows from past experience that the number of fairs he will pick up during an evening is a random variable which has the mean 25.6 and S.D 4.2 .Find the probabilities that the driver will pick up.
A gun has a muzzle speed of 50 meters per second. What angle of elevation should be used to hit an object 170 meters away? Neglect air resistance and use g = 9.8 m / sec^{2} as the acceleration of gravity.
The total amount of oil spilled in the 1990s was 1/3 the amount spilled in the 1970s and 30 thousand tons less than the oil spills of the 1980s. Using one variable, write an expression that represents the oil spills for each decade.
Write an equation that can be used to determine the total weight of all the newspapers Sam has bundled.
Write a general statement that describes when a string is part of the language generated by the above automata and when that string is not in the language.
A plane flying horizontally at an altitude of 3 mi and a speed of 485 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station. Please round yo..
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