The U.S. Department of Transportation reported the accompanying data on the number of speeding related crash fatalties during holiday periods for the years from 1994 to 2003.Holiday Period 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003New Year's Day143 144 172 72 219 138 171 134 210 70191 172 185 197 138 183 156 190 188 181Memorial Day(a) Compute the standard deviation for the New Year's Day data. (Round the answer to three decimal places.)(b) without computing the standard deviation of the Memorial Day data, determine whether the standard deviation for the Memorial Day data would be larger or smaller than the standarddeviation of the New Year's Day datalargersmaller

Let the U.S. Department of Transportation reported the accompanying data on the number of…

Answered: The US Department of Transportation…

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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The following are data regarding number of minutes to accomplish a certain task: 121, 134, 145, 212, 289, 306, 367, 380, 453. Find the standard deviation
A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hour
4. Use Descriptive Statistic tool on the Data Analysis to find the following: d. Standard Deviation е. Variance f. Range g. Skewness Table: 88 62 63 88 65 85 83 76 72 63 60 46 85 71 67 75 78 87 70 42 63 90 63 60 73 55 62 62 83 79 78 40 51 56 80 90 47 48 54 77 86 55 76 52 76 40 52 72 43 60
MY NOTES The U.S. Department of Transportation reported the accompanying data on the number of speeding-related crash fatalities during holiday periods for the years from 1944 to 2003. Holiday Period 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 New Year's Day Memorial Day 143 144 172 74 219 138 171 134 210 70 191 174 185 197 138 183 156 190 188 181 (a) Compute the standard deviation for the New Year's Day data. (Round the answer to three decimal places.) (b) Without computing the standard deviation of the Memorial Day data, determine whether the standard deviation for the Memorial Day data would be larger or smaller than the standard deviation of the New Year's Day data. O larger O smaller
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
3565 6781 11366 5656 10024 9101 9286 10376 7290 15558 6657 20795 4027 19100 16223 14502 2830 5785 9070 7560 D) Calculate the mean and standard deviation of your data set. You may use technology such as Google Sheets, Excel, or a TI-83/TI-84. Round to the nearest hundredth. Mean 9777.6 Standard Deviation 5090.73 E) Using a significance level a = 0.05, find the critical value using the following steps. 1. What are the degrees of freedom? n D20 d. f.= n- 1=19 = 19 2. Will this be a one-tailed or two tailed test? two-tailed 3. Using table 5 from the back of your textbook (page A18 in Appendix B), what is the critical value? 1.729
2. Find out (i) Mean (ii) Median and (iii) Standard Deviation for the following data. Class 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 Interval Frequency 15 18 22 28 32 26 25 17
The following data represent the number of people aged 25 to 64 years covered by health insurance (private or government) in 2018. Approximate the mean and standard deviation for age. Age Number (millions) 25-34 35-44 45-54 55-64 23.2 36.4 35.4 21.6 (Type an integer or decimal rounded to two decimal places as needed.) (Type an integer or decimal rounded to two decimal places as needed.)
C. Atlantic Video is planning to add the new Marvel movie to their collection, and they predict that this will double their demand (i.e. new arrival rate is 60 customers every hour) and halve the standard deviation of the inter-arrival times. However, they want to keep the average waiting time of customers in line the same as before. Assume that the coefficient of variation for the check-out times does not change. Please answer the following questions. 1) Does the employee need to work twice as fast? If not, calculate the new service rate. 2) What is the average number of customers in the store?

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