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REALLY NEED HELP WITH QUESTIONS 13, 14, AND 15. PLEASE PROVIDE DETAILED EXPLANATIONS WITH STEP-BY-STEP DETAILS AND ANSWER ALL QUESTIONS... PLEASE HELP!!! Note: The data

REALLY NEED HELP WITH QUESTIONS 13, 14, AND 15. PLEASE PROVIDE DETAILED EXPLANATIONS WITH STEP-BY-STEP DETAILS AND ANSWER ALL QUESTIONS... PLEASE HELP!!! Note: The data and reference for week7-X.txt and week7-Y.txt is located at the bottom of the page

13. A certain golf ball brand (Brand A) claims their ball can be hit a greater distance than a competitor brand (Brand B) off of a tee. To test this claim, the brands invited 16 golfers to hit both balls, and their results are listed below. Assume the differences of the paired A distances and B distances are approximately normally distributed and test the null hypothesis H0 : D = 0 against the null hypothesis H1 : D > 0 using a paired t-test with the 16 differences. Let = 0.05.

Golfer Brand A Distance Brand B Distance
1 265 252
2 272 276
3 246 243
4 260 246
5 274 275
6 263 246
7 255 244
8 258 245
9 276 259
10 274 260
11 274 267
12 269 267
13 244 251
14 212 222
15 235 235
16 254 255

14. A company is comparing a new adhesive to an old adhesive. Let X and Y denote the amount of pressure the new and old adhesives can withstand, respectively.

  • (a) Based on n = m = 24 observations from both adhesives, define the test statistic and critical region for testing H0 : X Y = 0 against H1 : X Y > 0 where = 0.05
  • (b) For this part you will want to use the data in the files week7-X.txt and week7-Y.txt to calculate the value of the test statistic and state your conclusion.
  • (c) What is the approximate p-value of this test?
  • (d) You'll need to construct two box plots on the same graph. Do the box plots support your conclusion?

The next problem deals with a topic called Monte Carlo simulations.

In terms of machine learning, the phrase Monte Carlo generally means to run random simulations to estimate probability. We'll use it below to estimate the value of an integral.

Monte Carlo simulations (and the Monte Carlo Tree Search Algorithm) were used by Google's company DeepMind to help train a neural network in creating the computer programs AlphaGo and AlphaZero, which have become the leading players of the games of chess, shogi, and go. Their creation of AlphaGo "is the first computer program to defeat a professional human Go player, the first to defeat a Go world champion, and is arguably the strongest Go player in history."

15. Use Python (and NumPy) for this particular problem. Consider a function f(x) which is continuous on the interval [a, b]. Assume that m f (x) M for every x [a, b] for some constants m and M. We've already seen how we can estimate the integral

  • abf(x)dx

using Riemann sums, and other methods like the Trapezoid Rule, Simpson's Method, and Taylor series. We are going to see how randomly choosing points (x,y) can estimate the integral too! Consider the picture below.

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