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The manager of a company wants to investigate job satisfaction among its employees. One morning after a meeting, she talks to all 25 employees who attended. Does this sampling plan result in a random sample? What type of sample is it? Explain.
An education expert is researching teaching methods and wishes to interview teachers from a particular school district. She randomly selects 10 schools from the district and interviews all of the teachers at the selected schools. Does this sampling plan result in a random sample? What type of sample is it? Explain.
Fifty-one sophomore, 42 junior, and 55 senior students are selected from classes with 516, 428, and 551 students respectively. Identify which type of sampling is used and explain your reasoning.
Let n=pm such that p is the largest prime factor and n is divisible by p only once. Let G be of order n. Let H be a Sylow p-subgroup of G, and S is the set of all Sylow p-subgroups. How is S decomposed into H-orbits?
Asymptotes of trigonometric functions and Graph y = csc( 0.5x + pi/2) and y = cos( 0.5x + pi/2) on one set of coordinate axes.
if a plane can travel 480 miles per hour with the wind and 420 miles per hour against the wind , find the speed of the plane still in the air.
Does this sample indicate that songs classified as dance music have lower beats per minute than the songs ranked on a Top 200 list?
Coffee is being poured into a mug at a constant rate. Sketch a rough graph of the depth of the coffee in the mug as a function of time. Account for the shape of the graph in terms of concavity. What is the significance of the inflection point?
A department store wants to test the claim that 40% of its customers browse the store's website prior to visiting the store using a random sample of 100 customers. If the desired level of significance is 0.05, what are the critical values for the ..
what is the probability that all will make a purchase and evaluate the probability that a light bulb will burn out in less than 1000 hours.
Compare parallelograms,rectangles, rhombi, squares, and trapezoids as they relate to sides, side length, angles, diagonals, and created triangles.
You decide to start your article with a math example that the readers can understand. Describe a real world situation that could be modeled by a function that is increasing, then constant, then decreasing.
The firm forecasts that it could sell a maximum of 4,000 A-100's this week and a maximum of 1,000 B-200's. Profits for the A-100 are $1.00 each, and profits for the B-200 are $4.00 each. What are optimal weekly profits?
Consider English alphabets, how many 5 letters words can be form, if the 2nd letter can NOT be (B,D,E), 4nd letter must be (A,N) and the letter must not repeated.
By contracting an edge e = uv, we mean removing e and identifying the vertices u and v as a single new vertex. Let num_T(G) denote the number of spanning trees of the graph G.
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