The following data is winter temperatures in randomly selected towns and villages in Alaska.(simulated data)5.9 18.7 31.1 13.9 2.5 -171218.8 1.111.6 10.726.213.3 20 34.4 44.1 19.3 21.3Find the following, up to 3 decimal places where necessary.a. Mean 15.994b. Median 16.3c. Standard Deviationd. Min value -178e. Max value 44.1f. Range 61.18-Q₁h. Q3i. IQRj. Create a BoxPlot

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Answered: The following data is winter…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age, with a mean of 93 seconds and a standard deviation of 6 seconds. Thus, 99.7% of running times are approximately between: a. 45 and 141 seconds. b. 62 and 124 seconds. c. 75 and 111 seconds. d. None of the answer options is correct.
Is a measure of 29 inches "far away" from a mean of 19 inches? Suppose the data come from a sample whose standard deviation is 2 inches. A. How many standard deviation is 29 inches from 19 inches? b. Is 29 inches far away from a mean of 19 inches? c. Suppose the standard deviation of the underlying data is 7 inches. Is 29 inches far away from a mean of 19 inches?
The number of ornaments placed on trees is recorded. The results are as follows: 26 26 22 29 24 30 26 34 21 24 20 31 20 35 32 33 26 26 29 29 Find the Mean, Median, Mode, Midrange, Variance and Standard Deviation of the data.Round to 2 decimal places if necessary. Mean: Median: Mode: Midrange: Variance: Standard Deviation:
The life span of Duracell batteries is normally distributed. The mean life span is 10,502 hours an the standard deviation is 415 hours. If 66,500 duracell batteries are manufactured, approximately how many of those batteries last at least 9,850 hours? A 39,900 B. 46,600 C. 59,900 D. 62,600
Which of the following data would be most appropriate to report standard deviation ? scores of an easy exam reaction time ethnicity of a particular college height of adult men
Please answer the following three multiple choice questions :) Summarized below are data for a study to see if hours of sleep per day for med and non-med students are the same: n x¯ s med students 25 5.8 0.83 non-med students 32 6.3 1.39 1. Find the test statistic (assume unequal standard deviation) A. -15.44 B. -5.69 C. -1.69 D. -1.81 2. Let tstat represent the value of the test statistic from the previous question. The degrees of freedom for the test are df = 52. To test the claim that the mean hours of sleep for med and non-med students is different, the P-value is calculated as: A. 2*pt( tstat, df=52, lower.tail = TRUE) B. 2*pt( tstat, df=52, lower.tail = FALSE) C. pt( tstat, df=52, lower.tail = TRUE) D. pt( tstat, df=52, lower.tail = FALSE) 3. The correct P-value is 0.098. At α = 0.05, we A. reject H0. The claim that means are different is not supported. B. reject H0. The claim that means are different is supported. C. fail to reject…
The carbon dioxide emissions of a group of nations had a mean of 9.2 and standard deviation of 1.8. a. One country's observation was 15.9. Find its z-score and interpret. b. Another country's observation was 2.6. Find its z-score and interpret. c. A third country's observation was 8.7. Find its z-score and interpret. a. The z-score is 3.73.7. This indicates that the observation of 15.9 is a distance of 3.73.7 standard deviation(s) above the mean. (Round to two decimal places as needed.)
Rank the data sets described in order of the least spread out (1) to the most spread out (5) based on the standard deviation. Set A: o = 3.5 [ Select ] Set B: o = 8.02 [ Select ] Set C: o = 1.4 Select ] Set D: o = 5.7 Select ] Set F: o = 0.58 [ Select ]
Question 3 The number of hours worked per week for a sample of ten students is shown below. Student Hours 1 39 28 10 16 26 34 38 9. 4 10 32 1. Determine the mean, median, and mode. 2. What is the range of the data for the hours worked? 3. What is the standard deviation for the number of hours worked? 2. 3. 4, 7, 8.
1. Hourly salary of 5 workers are given below. 6 8 9 10 12 Calculate sample mean and standard deviation. A. Mean = 9, SD = 1.99 B. Mean = 8, SD = 1.58 C. No correct answer D. Mean = 9, SD = 2.50 E. Mean = 9, SD = 2.24 2. In 11 different days the temperature recorded as following numbers 16 19 18 22 24 26 28 19 14 10 12 Calculate the median A. Median = 19 B. Median = 18 C. Median = 14 D. Median = 20 E. No correct answer 3. Suppose X measures the number of computer sell per day and Y measures the profit per computer. For 6 shop the data are as follows. Calculate the sample correlation coefficient. X 5 7 9 10 Y 5 6 7 9 A. 0.50 B. No correct answer C. 0.43 D. 0.93 E. 0.97 48
A sample of 10 networking sites for a specific month has a mean of 26.1 and a standard deviation of 4.2. Which of these is the point estimator? a. 4.2 b. 1.83 c. 3.25
Given Samples A and B below, Sample A: 4.9 4.6 4.8 2.7 4.2 2.0 2.1 3.1 5.0 Sample B: 3.2 2.4 3.8 4.2 4.9 5.0 3.6 4.4 2.3 a. Calculate the mean and standard deviation for each sample. Sample A: X A = 0.00; s A = 0.00 Sample B: x B= 0.00 ; s B = 0.00 Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CV A = 0.00% Sample B: CV B = 0.00% Round to two decimal places if necessary c. Which sample is more variable? Sample A Sample B Neither sample is more variable than the other

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