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Find the sample standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations. To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted an listed below: $142 $205 $303 $429 $140 $384 $330 $209 $573 520.5 $174.5 $657,676.0 S109.6
please solve the equation. Please make the handwriting understandable someone has previously solved it but i could not read the equation ir calculations
Question 4 This question is worth 15 marks A load is mounted on a spring with a spring constant of 50 Nm and confined to move only vertically, as shown in Figure 3. The wheels which guide the mass can be considered to be frictionless The load has a mass, m = 2 kg, which includes a motor causing the mass to be driven by a force. F 2 coswt, given in newtons Figure 3 Schematic of a driven harmonic oscilator. The motion of the motor produces a forcing vibration constrained to act vertically Write the inhomogeneous differential equation that describes the system above. Solve the equation to find an expression for in terms oft and Out Questions
3. -/14.28 points HarMathAp12 13.2.038. For which of the following functions f(x) does Rx) dx give the area between the graph of f(x) and the x-axis from x = 9 to x = 12? (Select all that apply.) f(x) = x2 + 9 f(x) = -x? f(x) = x - 9
The line-to-line voltages in an unbalanced three-phase supply are Vab = 1000 0 degree , Vbc = 866.0254 -150 degree, and Vca = 500/120 degree. Determine the symmetrical components for line and phase voltages, then find the phase voltages Van, Vbn, and Vcn.
For the next few questions, use these answer choices: a) Agonist b) Antagonist c) Up-regulation d) Down-regulation e) Desensitization 51) This kind of molecule binds to a receptor and blocks 52) A cell can become more responsive to a signal 53) One explanation for drug tolerance includes a loss of its activity. molecule by initiating a(n) of receptors. receptor affinity for its signal molecule, also known as 54) If levels of a signal molecule are abnormally low, a patient might be given a(n) for that signal molecule to return him or her to homeostasis.
Due to their inseparability, services Select one: a. are typically marketed through indirect channels of distribution. b. can be inventoried. c. are produced and consumed simultaneously. d. create form utility.
3) Find the Fourier transform of the following signals (Hint: use FT properties and FT pairs) (20 points) Xi(t X3(t) 个 X2(4) 201个 '구 4) Let fi(l) and f5() be signals whose FT are depicted in the figure below. Also consider the signal P (1)-cosa, p2(1) = cos a,r. (Hint: use FT properties) a. Find and sketch x1(t)- e-jat fi (t) + 2e-jbt f2(t) b. Find and sketch x2 (t)- afi(bt) c. Find and sketch the FT o#x (1) = f(t)A(1) d. Find and sketch the FT orn (1)-0 +At))Ps(t). (30 points)
A consumer products researcher randomly surveyed 880 people and asked them if they try to avoid eating fast food. Of the 445 respondents who were 34 or younger, 229 said they did. Of the 435 who were 35 or older, 309 said they did.
a) Use Minitab to test at the 5% level for a difference in fast food avoidance between these two age groups. Interpret the test results in the context of the data and the question being studied.
b) Also, interpret the associated confidence interval for this test. How might the results of this test be used by a fast food company?
