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drug manufacturer wants to estimate the percentage of patients who experience cotton mouth when taking their heart medication. A survey of 450 patients who took their drug found that 55 experienced cotton mouth.
(a) Find a 98% confidence interval for the true proportion of patients who experienced cotton mouth. Show your calculations and/or explain the process used to obtain the interval.
(b) Interpret this confidence interval and write a sentence that explains it.
If the the two parellel sides of a trapezium is 11cm and 18cm .and the height is 10 cm. find the area of the trapezium.
Determine the fourier series for the function:- F(x) = 2x in the range -pi to pi and are periodic the the period 2pi. Sketch both the expected and fourier series graphs and use mathcad to check
Find a vector a with representation given by the directed line segment AB. Draw AB and the equivalent representation starting at the origin.
For what values of a in R (real numbers) is the function (1+x^2)^a in L^2. Let L^2 be like in Lebesgue integration where the set of all measurable functions that are square-integrable forms a Hilbert space, the so-called L2 space.
Prove the identity (n~r) (r~k) = (n~k) ((n-k)~(r-k)), whenever n, r, and k are nonnegative integers with r less than/equal to n and k less than/equal to r:
A straight line moves in such a way that the sum of the reciprocals of the intercepts of the axes is equal to 1/k , where k is a constant. Prove that the line will pass through a fixed point.
Joint and Marginal Probability Distributions, Person takes bus & subway to work. Bus runs every 20 min (X) & subway every 4 min (Y).
At the beginning of an experiment, a scientist has 372 grams of radioactive goo. After 105 minutes, her sample has decayed to 46.5 grams. What is the half-life of the goo in minutes?
Describe how a domestic fast food chain like McDonald's with plans for expanding into China would be able to use a forecasting model.
State the key features (vertex, focus, directrix, direction of opening, and axis of symmetry) of each parabola, and sketch the graph.
Evaluate the nearest distance between two tunnels using cosine rule. In a mine, two tunnels are dug starting at the same point.
Prove or disprove that the subgroup H is normal in the group G and what is the order of the factor group D8=Z(D8)?
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