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Interpreting political Polling: A pollster surveys 200 people and asks them their preference of political party. He codes the responce as 0 1 2 3. He then calculates the average of the numbers and gets 0.95. How can that value be interpreted.
You discover a planet orbiting a distant star that has about the same mass as the Sun. Your observations show that the planet orbits the star every 67 rm days . What is its orbital distance?
In Example 3 of Section 2.5, the text shows how to write a system of linear equations using matrix notation. You can similarly write a linear programming problem in matrix notation.
A surveyor standing 50 meters from the base of a building measures the angle to the top of the building and finds it to be 35°. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 48°. How tall i..
Assume Gary is at rest at noon, then accelerates at a constant rate of 3 ft/sec^2. Find the parametrization of the motion in terms of t, seconds after noon. How long does it take to reach a height of 500 feet?
A pool measuring 10 meters by 20 meters is surrounded by a path of uniform width. If the area of the pool and path combined is 600 square meters, what is the width of the path?
a bank teller. at the end of a dat, she had total of 69 $5 and $10 bills. the total value of the money is $590. how many of each denomination does she have?
Which of the properties: reflexive, antisymmetric and transitive are true for the given relation? Begin your discussion by defining each term in general first and then show how the definition relates to this specific example.
If a 90% confidence interval for the true mean wingspan for all dragonflies is calculated, do you expect this interval be wider or narrower than the interval obtained in part (a)? Why?
An anchor weighing 125 lb in water is attached to a chain weighing 4 lb/ft in water. Find the work done to haul the anchor and chain to the surface of the water from a depth of 50 ft.
Out of 5000 policies for cell phones, a company received 585 claims. The average amount paid on the claims was $80. If the annual cost of the policy was $48, what was a customer's expected value of the cell phone insurance policy?
What is a complex fraction? What are the two ways to simplify a complex fraction? Show an example. What is the least common denominator? How do we use the least common denominator when adding rational expressions?
sales goal for december was 69532.12, actual amount sold for december was 73210.53. what is the percentage accomplished for the month of december.
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