31. To start a program to improve the quality of production in a factory, all theproducts coming off a production line, under what we have reason to believe arenormal operating conditions, are examined and classified as "good" products or"defective" products. The number of defective products in each successivegroup of six is counted. The results for 60 groups, so for 360 products, are shownbelow. Find the mean, median, mode, sample variance, and sample standarddeviation.10 0 00 00 0 0000.10.0011.10.0.020 00.1001010.10.0.10 0Vour anewer中Whp

Firstly, we will arrange the given data in form of frequencies: No. of defectives (xi) Frequency…

Answered: 31. To start a program to improve the…

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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1- Computer Literacy Test If 80% of job applicants are able to pass a computer literacy test, find the mean, variance, and standard deviation of the number of people who pass the examination in a sample of 150 applicants. 2- Fuel Efficiency for U.S. Light Vehicles The average fuel efficiency of U.S. light vehicles (cars, SUVS, minivans, vans, and light trucks) for 2005 was 21 mpg. If the standard deviation of the population was 2.9 and the gas ratings were normally distributed, what is the probability that the mean mpg for a random sample of 25 light vehicles is under 20? Between 20 and 25? 3- Elementary School Teachers Women comprise 80.3% of all elementary school teachers. In a random sample of 300 elementary chers, what is the probability that less than three-fourths are women?
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1. Consider the following sample of numbers: 1, 4, 5, 4, 3, 4, 7, 8, 5, 9, 12, 13, 11, 2. (a) Find the sample mean. (b) Find the sample standard deviation.
3. What are the mean, median, and sample standard deviation of the following numbers? 10 3 6 -2 1
2. Jim Miller works in the personnel department for a car company. He is told by his supervisor to investigate the difference in the average number of sick days between blue collar workers and whitecollar workers. So he obtained a random sample of 9 blue collar workers and a random sample of 9 white collar workers. He records the results below.At 10% level of significance, is there sufficient evidence to indicate a difference in mean sick days between blue collar workers and white collar workers.
29. In analysis of variance, an MS value is a measure of a. Variance b. the overall mean for the set of N scores c. the total variability for the set of N scores d. average differences among means
step by step with fomula
4. Sample Size. How does the sample size affect how close to normal a distribution of either sample means or sample pro- portions will be? What are the means and standard deviations of the distributions in each case? hp
8. Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin, & Kawachi, 2006). In a representative study, a sample of n 100 adolescents with a history of group participation is given a stan- dardized self-esteem questionnaire. For the general population of adolescents, scores on this questionnaire form a normal distribution with a mean of p. = 50 and a standard deviation of o = 15. The sample of group- participation adolescents had an average of M = 53.8. a. Does this sample provide enough evidence to con- clude that self-esteem scores for these adolescents %3D %3D are significantly different from those of the general population? Use a two-tailed test with a = b. Compute Cohen's d to measure the size of the difference. .05. c. Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.
A. What is the mean, median and mode? Separate answers with a single comma, i.e. 3.000,3.000,3.000 b. What is the standard deviation and sample variance? separate answers with a comma, i.e. 3.000,9.000 c.What is the largest value, smallest value and the sum of values? Separate answers with a comma, i.e. 4.543,11.345,46.000
A. Determine the test statistic B. What are the critical values C. What is the p value

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