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Mental health. The 2010 General Social Survey asked the question: "For how many days during the past 30 days was your mental health, which includes stress, depression, and problems with emotions, not good?" Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24 days in 2010.
(a) Interpret this interval in context of the data.
(b) What does "95% confident" mean? Explain in the context of the application.
(c) Suppose the researchers think a 99% confidence level would be more appropriate for this interval. Will this new interval be smaller or larger than the 95% confidence interval?
(d) If a new survey were to be done with 500 Americans, would the standard error of the estimate be larger, smaller, or about the same. Assume the standard deviation has remained constant since 2010.
On March 6, 2007, the Associated Press reported that Ed Nabors had won half of a $390 million jackpot, the largest lottery prize in US history at the time.
A tank is filled with oil of density 40 lb/ft3 to a depth of 3 feet as shown in the figure at the right. Each of its ends is a triangle of base 5 feet.
problem its been a busy weekend for larry. five people in his neighborhood left on vacation saturday morning and each
What is the minimum deceleration of the car which will ensure that no collision will occur?
the chance of winning a lottery game is 1 in approximately 28 million. suppose you buy a 1 lottery ticket in
Quiz 6. Use the Chain Rule to prove the following: The derivative of an even function is an odd function
Pick three more symmetric pairs and use choice notation to express their symmetry. Can you now express the symmetry of the entire array using choice notation? Please attempt to do so. Using sugar-numbers, prove that this symmetry makes sense. (By ..
Probability problems based on Poisson & Normal distribution
A volcano fills the volume between the graphs z=0 and z=1/(x^2+y^2)^14 and outside the cylinder x^2+y^2=1. Find the volume of the volcano.
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The sum of the infinite series, 1/2^2 - 2/3^2 + 3/4^2 - 4/5^2 + ... is given as pi^2/12 - log 2 on pages 64-65 in the book "Summation of Series" by L. B. W. Jolley, 2nd ed., 1961, Dover Pubs. Inc. (the ^ symbol denotes exponentiation in the above ..
Discuss the financial implications of gross uncollectibles on the bottom line of the healthcare institution, and explain how these are recorded on the financial statements.
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