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A population of 1,000 healthy, at-risk people is monitored for the flu starting on January 1st. No one has the flu at the start of the investigation. Thirty people develop the flu on June 30th and fifty people develop the flu on September 30th. Fifty-five people were lost to follow-up on March 31st and twenty-four people were lost to follow-up on November 30th. None of those lost to follow-up had developed the flu prior to becoming lost.
Microsoft Word - PHP 405 Problem Set 1.docx
What is the incidence rate of the flu from January 1st through December 31st?
Joint frequency table which summarizes voting trends in the most recent Presidential election, Suppose a deck of 10 cards each with a different digit from 0-9 are shuffled and a card from the top of the deck is drawn.
Suppose you want to analyze the level of foreign aid that Canada gives to developing countries each year. You are told that Canada's aid depends on the population of these countries, their level of poverty, and how good governance is in these countri..
Find the critical value for this hypothesis test.
Evaluate integrals : a) integral of [dz/(1 - z )^3 ] , C is circle |z| = 1/2 b) integral of [e^z/(1 - z )^3 ] dz , C is circle |z - 1| = 1/2
A fish tank is 1 yd long, 1.5 ft high, and 15 in wide. Determine the volume of water in the fish tank in cubic feet.Determine the weight of the water in pounds. One cubic foot of water weighs about 62.5 pounds.
In a shop there are 20 customers, 18 of whom will make a purchase. If three customers are selected, one at a time, at random, what is the probability that all will make a purchase?
The product and quotient rules Differentiate
A. At what rate are sales changing in the year 2002? B. What happens to sales in the "long run" (that is, as t )?
assuming no loss of speed,what is the velocity of the particle after the ricochet? simplify your answer.
At the point (1, 2), the line y = 3x-1 is tangent to the graph of f(x) = Ax3 + Bx2 + C, where A, B, and, C are all real numbers. if f''(1)=0, find the values of A, B, and C.
What is the order of the permutation (13)(486)(79) in S9? How many permutations have the same cycle type as it? Determine the disjoint cycle decomposition of the permutation
a motorboat travels 332 in 4 hoursgoing upstream 555 and in 5 hours going downstream. What is the speed of the boat in still water, and what is the speed of the current?
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