ELMOY%2DTakehome2

# ELMOY%2DTakehome2 - Take-Home Exam 2 Name:John Wade This...

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Take-Home Exam 2 Name: John Wade This Exam is due April 15, 2008 Submit your answer in a file named 'Your last name-first letter of first name-Takehome2' For example, if your name is John Smith, the File name will be: WadeJ-takehome2 Violation of this format will result in automatic rejection of your exam answer. Question 1: The data of Table 1 represents 300 observations of thermal conductivity measures of two types of materials Stee The data were taken on daily basis, with each day consisting of 10 specimens (total 30 days). (a) Calculate Descriptive Statistics for each material (b) Construct a Histogram and a Cumulative Frequency Curve for each material (c) Calculate the mean and standard deviation for each day and make a Table of each day mean and standrad d (d) Calculate the descriptive statistics of means for each material? (e) Verify the Central Limit Theorem for Each Material? (f) Using the data of day 8, estimate the population mean for each material? (g) Using the data of day 20, estimate the difference between population means of the two materials? (h) Using the data of day 8, estimate the population variance for each material? (i) Using the data of day 20, estimate the difference between population variances of the two materials? (j) test the hypothesis that the mean value of the population of steel has a thermal conductivity of 50 W/mk?-Use (K) test the hypothesis that the mean difference of the two materials population are equal-Use Day 15 data. Table 1 Day Steel (W/mK) Carbon Steel (W/mK) 1 49 51 1 52 55 1 47 67 1 43 45 1 58 54 1 36 57 1 54 60 1 40 39 1 38 46 1 51 59 2 33 41 2 47 66 2 45 74 2 37 48 2 45 74 2 48 47 2 36 67 2 48 67 2 49 66 2 55 48 3 50 48 3 48 51 3 59 45 3 52 55

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3 45 48 3 59 47 3 47 58 3 38 59 3 32 66 3 53 52 4 43 76 4 37 36 4 44 58 4 27 57 4 35 50 4 47 39 4 36 59 4 44 37 4 50 63 4 40 44 5 54 74 5 26 41 5 49 55 5 44 37 5 47 47 5 40 60 5 48 68 5 54 47 5 55 43 5 49 55 6 43 56 6 49 54 6 56 57 6 45 50 6 31 43 6 39 65 6 48 34 6 50 94 6 42 46 6 54 47 7 49 48 7 47 51 7 54 41 7 40 58 7 59 54 7 48 56 7 47 47 7 48 55 7 44 63 7 50 61 8 39 37 8 35 43 8 49 62 8 47 47 8 43 36 8 36 57 8 40 61
8 34 67 8 35 51 8 46 64 9 45 75 9 35 66 9 47 54 9 48 52 9 56 52 9 45 51 9 32 69 9 49 64 9 60 54 9 46 42 10 41 71 10 42 60 10 49 55 10 54 75 10 67 52 10 56 54 10 47 64 10 59 70 10 39 47 10 37 60 11 47 60 11 39 52 11 35 52 11 50 56 11 42 46 11 48 60 11 48 35

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• Spring '08
• Elmo
• Harshad number, Prime number, 55 37 47 60 68 47 43 55 56, C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C, B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B, 52 45 38 51 42 75 48 54

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ELMOY%2DTakehome2 - Take-Home Exam 2 Name:John Wade This...

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