Numerade

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Intelligence Quotients Intelligence quotients (IQs) measured on theStanford Revision of the Binet-Simon Intelligence Scaleare normally distributed with a mean of 100 and a standard deviation of 16. What is the probability that people have IQs between 115 and 140? (Please round the result to 5 decimal places.) QUESTION 9 According to the National Center for Health Statistics in Vital Statistics of the United States, there is roughly an 80% chance that a person of age 20 years will be alive at age 65 years. Suppose that three persons of age 20 years are selected at random. Find the probability that the number alive at age 65 years will be exactly three. (Please round the result to 3 decimal places.) Hint: 1.) Consider it as the Bernoulli process. 2.) Consider the three persons as three trials in the process. QUESTION 10 According to the National Center for Health Statistics in Vital Statistics of the United States, there is roughly an 80% chance that a person of age 20 years will be alive at age 65 years. Suppose that three persons of age 20 years are selected at random. Find the probability that the number alive at age 65 years will be at most two. (Please round the result to 3 decimal places.) Hint: 1.) Consider it as the Bernoulli process. 2.) Consider the three persons as three trials in the process. QUESTION 11 Desert Samaritan Hospitalkeeps records of emergency room (ER) traffic. Those records indicate that the number of patients arriving between 6:00 P.M. and 7:00P.M. has a Poisson distribution with parameter $\lambda$=6.9. What is the probability that, on a given day, the number of patients who arrive at the emergency room between 6:00P.M.and 7:00P.M.will be exactly 4? (Provide round the result to 5 decimal places.)

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If the shaded area is rotated 360° about the y-axis, determine the y-coordinate of the centroid of the resulting volume. 15" Parabolic 2" 0 0 Answer: $\overline{y}$ = i 4.352 7" in. Determine the x- and y-coordinates of the centroid of the shaded area. 1.3 $y = kx^{1/3}$ 0 0 x 0.6 1.5 Answers: $\overline{x}$ = i .844 $\overline{y}$ = i .465

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In the western United States, pronghorn antelopes and domestic cattle often associate with one another in the same open rangeland. In a hypothetical situation, a certain species of flea originally fed only on pronghorn antelopes. Some of these fleas developed a strong preference for cattle blood and mated only with other fleas that also preferred cattle blood. The host mammal can be considered as the fleas' habitat. Which of the following processes (both speciation and reproductive isolation) most likely occurred if the situation persisted and a new species evolved? allopatric speciation and gametic isolation allopatric speciation and habitat isolation sympatric speciation and habitat isolation sympatric speciation and temporal isolation

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If assets decreased by $12,000 during a year and net assets increased by $4,000, then liabilities must have A. increased by $16,000 during the year B. decreased by $12,000 during the year C. increased by $8,000 during the year D. decreased by $16,000 during the year

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Let $ P(X=x)=\left\{\begin{array}{cl}p(q)^{x}, & x=0,1,2, \ldots ., p+q=1 \\ 0, & \text { otherwise }\end{array}\right. $ then $ E\left(\frac{1}{X}\right) $ is

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QUESTION 8 Cardiovascular disease is defined as any disease affecting the circulatory system. both heart attacks and strokes. failure of the heart to pump an adequate blood supply to all blood vessels of the body. any disease affecting the heart or blood vessels.

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Which of the following is NOT secreted in the renal tubule? ammonia glucose H+ ions drugs creatinine

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15) The element with atomic weight 14 is Oxygen Boron Nitrogen Carbon 16) For Freundlich isotherm, a graph of a log $ x / 6 $ is plotted against log $ \rho $. The slope of the line and its y-axis intercept, respectively osrresponds to $ 1 / n k $ $ \log (1 / n), k $ 1/n. iogk $ \log (1 / n), \operatorname{logk} $ 17) The difference between the electrode potentials of two electrodes when no current is drawn through the cell is called Cell potential Cell emf Potential difference Cell voltagc 18) Physical properties depends on the size of atom size of proton size of neutron no. of electrons 19) Which of the following reactions will not result in the formation of carbon-carbon bond? Reimer-Tierman reaction Friedel Crafts acylation Wurtz reaction Cannizzaro rcaction 20) Host crystals show good cleavage because their atoms, ions or molecules are Weakly bonded together Strongly bonded together Spherically symmetrical Arranged in planes 21) Which polymers occur naturally? Starch and Nylon Starch and Cellulose Proteins and Nylon Proteins and PVC 22) $ \mathrm{CH} 3 \mathrm{CHO} $ and $ \mathrm{C} 6 \mathrm{H} 5 \mathrm{CH} 2 \mathrm{CHO} $ can be distinguished chemically by: Tollen's reagent test Fehling solution test Benedict test lodoform test 23) Elements that lie in same column have similar properties different properties same physical properties different chemical properties 24) While charging the lead storage battery $ \qquad $ .

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A particle coming from the left (E>V_(0)) impinges on a double-step potential: x=0V(x)={[0 for x<=0],[(V_(0))/(2) for 0<x<=a],[V_(0) for x>a]} a) Sketch the potential b) Determine the reflection coefficient for the partial wave reflected at x=0! c) Is it larger or smaller than that for the simple potential step.

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(1 point) If $A = \begin{bmatrix} 5 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 3 \end{bmatrix}$, then $A^{-1} = \begin{bmatrix} \\ \\ \\ \end{bmatrix}$

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diane b.