Question:In a manufacturing organisation, thedistribution of wages was perfectly normaland the number of workers employed in theorganisation was 5000. The mean wagesof the workers were calculated at Dollar800 per day and the standard deviationworked out to Dollar 200. On the basis ofthe information estimate :(1) the number of workers getting wagesbetween Dollar 700 and Dollar 900.(ii) Percentage of workers getting wagesabove Dollar1000.(iii) Percentage of workers getting wagesbelow Dollar 600.

Answered: Image /qna-images/answer/7c82050f-e72a-4398-bdae-d03f0019b703.jpg

Answered: Question: In a manufacturing…

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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# 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5. Convert 90 to a z-score.
If a set of observations is normally distributed, what percent of these differ from the mean by (a) more than 2.50? (b) less than 0.640?
According to the Empirical Rule, in a Normal Distribution of data you will have percent of the data within 1 standard deviation of the mean, percent of the data within 2 standard deviation of the mean, and percent of the data within 3 standard deviation of the mean.
On Professor Hardtack's last cost accounting exam, the mean score was 71, the median was 77, and the mode was 81. (a) Check the appropriate choice of the distribution, based on the statistics given. The distribution should be skewed to the left because the mean is less than the median. The distribution should be skewed to the left because the standard deviation is less than the median. The distribution should be skewed to the right because the mean is less than the median. The distribution should be skewed to the right because the coefficient of variance is less than the median. (b) Select the factor that might cause the distribution be like this. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) Many students did not study for the exam ? No…
Alice was told that her reading test score was one standard deviation below to me if test scores were approximately normal with m= 86 and standard deviation= 4. What was Alice's score?
The mean score for first exam in your first organic chemistry class (section A) was 60, with a standard deviation of 5. Your score on the exam was 70. A. How many standard deviations above the mean is your score?
On an intelligence test, the mean number of raw items correct is 236 and the standard deviation is 39. What are the raw (actual) scores on the test for people with IQs of (a) 119, (b) 81, and (c)100? To do this problem, first figure the Z score for the particular IQ score; then use that Z score to find the raw score. Note that IQ scores have a mean of 100 and a standard deviation of 15. (a) What is the raw (actual) score on the test for people with an IQ of 119?
The distribution of sample means for bi-monthly employee income at a particular company for samples of 70 employees is normal with a mean of $5921 and a standard deviation of $219. You take a random sample of 70 employees from the company and find that their mean bi-monthly income is $5668. How many standard deviations is the sample mean from the mean of the distribution of sample means?
Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of mercury), with a standard deviation of 9 mmHg. Suppose that the blood pressures are normally distributed. Complete the following statements. (a) Approximately? mmHg and 140 mmHg. of women over seventy have blood pressures between 122 (b) Approximately 95% of women over seventy have blood pressures between mmHg and mmHg.

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