Homework Answers
Ans 1
Less than 45 or more than 75 is 5 standard deviations away from the mean
P = 0.0000
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In a d stribution where the mean 60 and the standard deviation is 3 find the...
estimate the average age at which multiple sclerosis patients were diagnosed with the condition for the...
estimate the average age at which multiple sclerosis patients were diagnosed with the condition for the first time in a given city. How big should the sample be? Define your procedures for this estimate (if necessary, set your own values of unknown parameters, based on statistical theory). In Table 1 you will find all ages of this patient population. 54 58 56 48 62 59 55 56 60 52 53 61 56 56 53 37 71 62 39 61 54...
The Thompson Tire Company did research in Alabama regarding the miles their commercial truck tires would...
The Thompson Tire Company did research in Alabama regarding the miles their commercial truck tires would travel before they no longer met the Federal Highway Department tread depth requirements. The results of their study are in the file “Thompson Data Spring 2019” and show the mileage in 1,000 miles. Calculate the mean, median and mode of the data. Develop a box plot. Are there any outliers? Do the amounts follow a symmetric distribution or are they skewed? Justify your answer....
Consider the below matrixA, which you can copy and paste directly into Matlab.
Problem #1: Consider the below matrix A, which you can copy and paste directly into Matlab. The matrix contains 3 columns. The first column consists of Test #1 marks, the second column is Test # 2 marks, and the third column is final exam marks for a large linear algebra course. Each row represents a particular student.A = [36 45 75 81 59 73 77 73 73 65 72 78 65 55 83 73 57 78 84 31 60 83...
Problem 1: Confidence Interval for Percentage of B’s. The data set “STAT 250 Final Exam Scores”...
Problem 1: Confidence Interval for Percentage of B’s. The data set “STAT 250 Final Exam Scores” contains a random sample of 269 STAT 250 students’ final exam scores (maximum of 80) collected over the past two years. Answer the following questions using this data set. a) What proportion of students in our sample earned B’s on the final exam? A letter grade of B is obtained with a score of between 64 and 71 inclusive. Hint: You can do this...
Problem 4: Variables that may affect Grades The data set contains a random sample of STAT 250 Final Exam Scores out of 80 points. For each individual sampled, the time (in hours per week) that the stu...
Problem 4: Variables that may affect Grades The data set contains a random sample of STAT 250 Final Exam Scores out of 80 points. For each individual sampled, the time (in hours per week) that the student spent participating in a GMU club or sport and working for pay outside of GMU was recorded. Values of 0 indicate the students either does not participate in a club or sport or does not work a job for pay. The goal of...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is in a given detector over a specific period. The following data were taken in a y -ray detection experiment over 98 ten-second intervals: 58 50 57 58 64 63 54 64 59 41 43 56 60 50 46 59 54 60 59 60 67 52 65 63 55 61 68 58 63 36 42 54 58 54 40 60 64 56 61 51 48...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In the Sanitary District of Chicago, operating engineers are hired on of a competitive civil-service examination. In 1966, there were 223 appl for 15 jobs. The exam was held on March 12; the test scores are s arranged in increasing order. The height of each bar in the histogram next page) shows the number of people with the correspondin examiners were charged with rigging the...
Find the mean of the following data set: 27, 28, 30, 41, 43, 44, 45, 51,...
Find the mean of the following data set: 27, 28, 30, 41, 43, 44, 45, 51, 51, 53, 53, 54, 56, 56, 56, 57, 57, 58, 58, 59, 61, 62, 62, 62, 63, 64, 67, 68, 68, 68, 69, 69, 74 68 57 55.58
The alternating current (AC) breakdown voltage of an insulating liquid indicates its dielectric strength. An article...
The alternating current (AC) breakdown voltage of an insulating liquid indicates its dielectric strength. An article gave the accompanying sample observations on breakdown voltage (kV) of a particular circuit under certain conditions. 62 51 54 57 42 54 56 61 59 64 51 54 64 62 51 68 54 56 58 51 56 50 56 56 46 55 54 54 53 48 48 55 57 49 63 58 57 55 53 59 54 52 51 56 60 50 57 59...
can you upload the answer in excel 7. Following are ages of 30 students in an...
can you upload the answer in excel
7. Following are ages of 30 students in an ARC Boot Camp class: 18 30 20 21 28 26 20 21 19 22 26 38 18 19 23 25 19 20 18 21 29 35 17 22 19 24 23 21 20 25 Construct an expanded stem-and-leaf display for the given data. Stem Leaves 2. The following data values are the actual low temperatures recorded near the author's home. Construct a frequency distribution...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is in a given detector over a specific period. The following data were taken in a y -ray detection experiment over 98 ten-second intervals: 58 50 57 58 64 63 54 64 59 41 43 56 60 50 46 59 54 60 59 60 67 52 65 63 55 61 68 58 63 36 42 54 58 54 40 60 64 56 61 51 48...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In the Sanitary District of Chicago, operating engineers are hired on of a competitive civil-service examination. In 1966, there were 223 appl for 15 jobs. The exam was held on March 12; the test scores are s arranged in increasing order. The height of each bar in the histogram next page) shows the number of people with the correspondin examiners were charged with rigging the...
Find the mean of the following data set: 27, 28, 30, 41, 43, 44, 45, 51, 51, 53, 53, 54, 56, 56, 56, 57, 57, 58, 58, 59, 61, 62, 62, 62, 63, 64, 67, 68, 68, 68, 69, 69, 74 68 57 55.58
The alternating current (AC) breakdown voltage of an insulating liquid indicates its dielectric strength. An article gave the accompanying sample observations on breakdown voltage (kV) of a particular circuit under certain conditions. 62 51 54 57 42 54 56 61 59 64 51 54 64 62 51 68 54 56 58 51 56 50 56 56 46 55 54 54 53 48 48 55 57 49 63 58 57 55 53 59 54 52 51 56 60 50 57 59...
can you upload the answer in excel
7. Following are ages of 30 students in an ARC Boot Camp class: 18 30 20 21 28 26 20 21 19 22 26 38 18 19 23 25 19 20 18 21 29 35 17 22 19 24 23 21 20 25 Construct an expanded stem-and-leaf display for the given data. Stem Leaves 2. The following data values are the actual low temperatures recorded near the author's home. Construct a frequency distribution...
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