Calculate the standard deviation from the following data:Heights in cm150 155 160 165 170 175 180No. of students15 24 32 33 24166[Ans.: 8.038 cm]

Answered: Calculate the standard deviation from…

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 annual Commissions Per Sales Person a manufacturer of light employed by Machinery averaged $40000. A Standard deviation of $5000. The percent between $32000 and $42.000 equal to A) 60.0% B) 39.94% c) 34.13 %. 0) 81.66%
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate ?μ by giving a 98% confidence interval. SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.) ?¯= Give a 98% confidence…
For questions 6 through 11, refer to the following table, representing responses from the 2018 GSS: Respondent Sex Mean Hours Worked Last Week Standard Deviation N Male 44.60 14.969 670 Female 38.15 13.276 711 6. What proportion of females worked less than 40 hours per week? a. How many people in the sample does that correspond to?7. What percentage of males worked between 40 and 50 hours per week? a. How many people in the sample does that correspond to?8. What number of hours worked among females corresponds with a Z score of -2.00?9. Calculate the number of hours worked last week that corresponds to the 95th percentile for each sex. a. If you were going to calculate the 75th percentile, what Z value would you use? 10. Calculate the standard error for both males and females. a. What are you using for sigma, and why? 11. Calculate the 95% confidence interval for each sex. Can you say with 95% confidence that they are different? Why or why not? a. If you were…
What is the population standard deviation using the following formula
Analyze the following data. Assume the true value of L (the length of a table) is 93.40cm. L(cm) 93.2 93.3 93.9 92.8 93.5 93.4 92.9 a) What are the mean and standard deviation of this data sample? b) What is the uncertainty of the mean? c) Report the measured value of L. d) What is the relative discrepancy between the measured value of L and its true value? Suppose you have a second set of data for the same quantity that gives the following result: L = (93.90 ± 0.02) cm. e) Is this value more or less precise than the first value? f) Is this value more or less accurate than the first value? g) Do the two values agree given their uncertainties? h) What is the relative discrepancy between the two values?
d) and e)
18
Some experimental data for a distance measurement are as folows: Data Point Value Measured in meters 1 1.52 2 1.49 1.50 1.56 3 4 5 1.54 6 1.38 1.61 8 1.55 9 1.54 1.62 10 11 1.81 1.47 12 13 1.52 14 1.44
see pictures. Questions 1, 2 and 3 1) 2 answers and choose one (right-tailed, left-tailed, two-tailed) 2) z= 3) P-Value

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Calculate the standard deviation from the following data: 150 155 160 165 170 175 180 15 24 32 33 24 16 6 Heights in cm No. of students [Ans.: 8.038 cm]