(05.05 MC)  An ecological group suspects dolphins are consuming dangerous levels of arsenic in a region of the world. Dangerous levels of arsenic are classified when they reach beyond 7.0 parts per million. A random sample of 28 dolphins in the region were tested and the data is shown in the stemplot. Key: 2|4 = 2.4 parts per million Part A: What proportion of the dolphins in the sample have dangerous levels of arsenic in their systems? (4 points)Part B: Construct and interpret a 99% confidence interval for the mean arsenic levels of the dolphins if the sample of 28 dolphins has a mean arsenic level of 5.26 parts per million and standard deviation of 1.49 parts per million. (6 points)(10 points)

The elastic beam theory is not used in the design of reinforced concrete beams because (1) the compressive stress-strain relationship for concrete becomes non-linear at higher strain values and (2) concrete cracks at low tensile stresses making it necessary to use reinforcing steel.

A concrete cover of at least two bar diameters is required to sufficiently bond the reinforcement to the concrete.

Sketch the graph of the function. ​ P(x) = ( x – 1 ) 2 ( x – 2 ) ​

15. How is FDG trapped in the cell?

You were instructed to begin the prewriting and outlining process for Paper 2. Below, please discuss the following: The topic you chose and why. What your tentative working thesis is.

A beam has dimensions of b = 18 in., h = 30 in., and d = 27.5 in. and is reinforced with 5 No. 7 bars. The concrete strength is 10,000 psi, and the yield strength of the reinforcement is 60,000 psi. Assuming the reinforcement has yielded, determine the depth to the neutral axis, c.

Discuss your experiences with a tutor this week. What did you like? What did you dislike? Do you think you would take papers for other classes to the CLE in the future? Why or why not? Elaborate on your thoughts here.

A full structural analysis of continuous beams and one-way slabs is often required to find the design moments and shears at critical sections (commonly midspan and faces of supports).

(06.07 LC)  The mean and standard deviation for number of battery crimes in the U.S. from 1985 to 2000 are x̄ = 326,845 and sx = 27,569. The mean and standard deviation for number of property crimes in the U.S. for the same time period are ȳ = 634,235 and sy = 42,268. The correlation coefficient is r = 0.92. Find the equation for the least-squares regression line for number of property crimes compared with number of battery crimes. (4 points)