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Problem 3. (1 point) Consider the following data set. Find the mean and standard deviation. Data...
(1 point) Use the table below to find the standard deviation of the following data set: Use at least three decimal places of accuracy at each step. 21,28,41,41,42,47 21 28 41 41 42 47 SUM SUM SUM 12- Note: In order to get credit for this problem all answers must be correct.
(1 point) Consider a normal distribution curve where the middle 90 % of the area under the curve lies above the interval ( 3·11 ) Use this information to find the mean, μ , and the standard deviation, σ , of the distribution. Note: You can earn partial credit on this problem.
For this question, you are required to find the standard deviation for a set of data. The answer alone will not achieve full marks. There are many tools available to calculate the standard deviation. Here you are required to use several of the tools and show your working out to earn the marks. The data is the test results of 21 students who sat a mathematics quiz worth 100 marks. Results: 60, 47, 17, 43, 30, 90, 77, 61, 54,...
Lecture18: Problem 7 Previous Problem List Next (1 point) The diameter of the twelve-penny common nails made by 'Snails!, Inc., is normally distributed with standard deviation 0.004 in. A sample of 37 such nails was found to have a mean diameter of 0.127 in. Find a 90% confidence interval for the mean diameter of all such nails. Round the endpoints to five decimal places. Confidence interval is ( Note: You can earn partial credit on this problem. Note: You can...
(3 pts) Consider the following list of numbers. Use the shortcut formula to find the standard deviation. 5, 5, 5, 8, 8 standard deviation = Preview Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. (5 pts) Consider a box containing the following numbers. 2, 4, 7, 13, 14 The SD for the box is 4.77. Suppose 25 draws are made at random with replacement from the box. The expected value for this sum...
For the following data set, calculate the mean and standard deviation standard deviation mean Value Sample Number Number 1 7.019 2 7.017 S= 7.012 4 7.014 5 7.024 7.023 6
For the following data set, calculate the mean and standard deviation. mean standard deviation SampleValue 4.029 4.026 4.014 4.018 4.028 4.029 Number Number 6
Previous Problem Problem List Next Problem (1 point) The data set below shows a sample of student exam scores on a final examination. 70, 60, 64, 83, 34, 41, 61, 55, 78, 61, 45, 66, 32, 75, 48, 91, 46, 89, 98, 60, 83, 55, 37, 71, 90 - Part 1 Compute the following, give each answer to at least four decimal places. The mean of these scores is 63.72 The standard deviation of these scores is 18.9814 Part 2...
In Exercise 26, find the range, mean, variance, and standard deviation of the population data set. 26. The ages of the Supreme Court justices as of December 22, 2016 (Source: Supreme Court of the United States) 61 80 68 83 78 66 62 56
(1 point) Using R, calculate the mode, mean, and median of the following data: 15, 999, 18, 14, 18, 18, 21, 19 To calculate the mode, you will have to google for the code. It is not a built in function to R. Mode = Mean = Median = Which measure of center does not work well here? A. Mean B. Median C. Mode D. All of the above Note: You can earn partial credit on this problem.