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Arachnophobia. A 2005 Gallup Poll found that 7% of teenagers (ages 13 to 17) suffer from arachnophobia and are extremely afraid of spiders. At a summer camp there are 10 teenagers sleeping in each tent. Assume that these 10 teenagers are independent of each other.52
(a) Calculate the probability that at least one of them suffers from arachnophobia.
(b) Calculate the probability that exactly 2 of them suffer from arachnophobia.
(c) Calculate the probability that at most 1 of them suffers from arachnophobia.
(d) If the camp counselor wants to make sure no more than 1 teenager in each tent is afraid of spiders, does it seem reasonable for him to randomly assign teenagers to tents?
Unless otherwise noted, the given loads are superimposed loads; neglect the beam weight; neglect shear and moment considerations.
A survey is done to estimate the proportion of U.S. adults who think that cell phone use while driving should be illegal. In the survey, 54% of a randomly.
The probability that a teenager will fall in love is p = .72. The probability that a student will play a sport is p =.55.
Construct a stem-and-leaf display for light loss percentage of the 19 events.- Locate on the stem-and-leaf plot, part a, the light losses associated with eclipses of Saturnian satellites.
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How do you go about calculating different probabilities--say an item was selected at random and we wanted to know how far it is from the mean or the probability that it is at least 4.5 or more?
Find the equation of the Ellipse whose foci coincide with the foci of the hyperbola x^2 - 3y^2 - 2x - 12y + 1 = 0 and whose eccentricity is the reciprocal of that of the hyperbola and sketch both curves.
Among a random sample of six patients using the drug, find the probability of the stated event. What is the probability that none have undesirable effects?
a simple random sample of 50 items from a population with 6 resulted in a sample mean of 32. provide a 90 confidence
Hypothesis Testing
Holding a gun, a thief robs John Q. Public of thousands of dollars. Holding a baby, an unmarried mother robs taxpayers of thousands of dollars.
a marketing analyst at an internet book store is testing a new web design which hopes to increase sales. she wants to
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