Solid state physics

A physics class has 50 students. Of these, 14 students are physics majors and 16 students are female. Of the physics majors, three are female. Find the probability that a randomly selected student is female or a physics major. The probability that a randomly selected student is female or a physics major is (Round to three decimal places as needed.)Discuss: (SOLID-STATE PHYSICS) a) The main intrinsic and extrinsic semiconductors. b) The direct gap and indirect gap semiconductors. c) Phonons versus photons. d) Electron-hole generation and recombination. e) LED. f) Photo diode quantum efficiency. g) Photovoltaic and photo resistive (or conductive ) modes. h) Open circuit voltage, short circuit current, power and efficiency of solar cells.An international mathematics and science study obtained Calculus and Physics scores for 93 students within one particular region. A linear regression model was fitted, resulting in the following scatter plot with superimposed least squares line, and summary statistics. Calculus Physics Mean 461 60226 451.63849 Std Dev 98.340618 86.095794 Minimum 263.18 259.66 Maximum 708.62 819.31 800 700- 600- Physics Score 500 - 400 300 300 400 500 600 700 Calculus Score Estimate 5td Error t Statistic P-value Intercept 173.65547 31.43222 5.52 3.110e-7 Slope 0.6022133 0.066615 9.04 2.602e-14 Source df 55 MS Fratio P-value Regression 1 322666.87 322667 7 81.7261 3.110e-7 Error 91 359281.82 3948 Total 681948.69 The student who obtained the maximum score (819.31) for Physics had a calculus score of 641.49. By how much did this student exceed the Physics score predicted by the fitted model? Select one: O 3. 390.26 O b. 667.05 O c. 367.67 O d. 559.97 O e. 259.34You are testing the hypothesis that wood ant population size is the same in oak and maple forests. You measure average population sizes of 10,000 in oak forests, and 15,000 in maple forests . You compare these averages with a t-test, which yields a statistical probability of p = 0.45. You should: () accept the statistical null hypothesis because p > 0.05, so these results are not surprising if the null hypothesis is true. )accept the statistical null hypothesis because p 0.05