Mathematics, 12.10.2020 02:01 NightSun8891
1. A 50-question true-false exam is given. Each correct answer is worth 10 points. Consider an unprepared student who randomly guesses on each question. • If 5 points are deducted for each incorrect answer, what is the chance that the student will score at least 200 points? • If 10 points are deducted for each wrong answer, what is the chance that the student will get a negative score on the exam? First, define X, the distribution of X, and the two parameters that define this distribution. (5 pts). Then, for each of the two parts: (i) State the probability equation; (ii) State the Excel formula; (iii) State the numerical answer. (12 pts for (i) and (ii); 3 pts for (iii); total 20 pts) 2. A manager of boiler drums wants to use regression to predict the number of mean worker-hours (Y) needed to erect the drums in future projects. Data for 36 boilers have been collected and is given in Boilers excel worksheet. In the dataset, there are also data corresponding to boiler capacity (pounds); boiler design pressure (psi); boiler type and drum type. (25 pts)
Answers: 1
Mathematics, 21.06.2019 20:00
Last one and the bottom answer choice is y=(x-4)^2+1 you guys!
Answers: 1
Mathematics, 21.06.2019 23:50
Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10
Answers: 2
Mathematics, 22.06.2019 01:00
For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)
Answers: 3
Mathematics, 22.06.2019 03:00
If 0° ≤ θ ≤ 90° and cosθ = 11 15 , what is the value of sin (90° - θ)? a) 11 /15 b) 15/ 11 c) 15 /4 d) 4/15
Answers: 2
1. A 50-question true-false exam is given. Each correct answer is worth 10 points. Consider an unpre...
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