Answered: Find the standard deviation of 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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Find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 23 range = standard deviation (8) = IQR = 26 range = 45 51 IQR = (Please enter an exact answer.) A new number, 223, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set. standard deviation = 54 54 60 65 83 97 (Please enter an exact answer.) (Round to one decimal place.) (Please enter an exact answer.) (Round to one decimal place.) (Please enter an exact answer.)
At a hair salon, customers arrive at the rate of 3 customers per hour. The standard deviation of the time between two consecutive arrivals is estimated as 9 minutes. On average, it takes a customer 25 minutes to complete the service (regardless of which hairdresser provides the service). The coefficient of variation of the service time is estimated as 0.8. What is the standard deviation of the service time in minutes?
The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for a chemistry test is 23 with a standard deviation of 4. A student got a 66 on the history test and a 26 on the chemistry test, use Z-scores to determine the relative performance on each test. On which test did the student perform better, and why?
Assume that the mean height of women in the United States is 64.5 inches, with a standard deviation of 2.5 inches. A particular woman is 63 inches tall. Find the z-score of her height. (Round to two decimal places.)
In a survey, the mean weight of 1005 rats was calculated to be 132 gr. The standard deviation of the observation was found to be s=3 gr. Determine at least how many of the surveyed rats have a weight between 124.5 and 139.5 gr.
ion on 10.22. The mean and standard deviation of a set of 100 observations were worked out as 40 and 5 respectively by a com- puter who by mistake took the value 50 in place of 40 for one obser- vation. Recalculate the correct mean and variance.
Plz help asap t8.
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1537 and the standard deviation was 315. The test scores of four students selected correspond to each value. random are 1920, and 1260. Find the z-scores that The z-score for 1920 is. (Round to two decimal places as needed.) The z-score for 1260 is (Round to two decimal places as needed.)
The manager at UPS feels that the weights of packages shipped recently are less than in he past. Records show that in the past packages have had a population mean weight of 36.7 pounds and a population standard deviation of 14.2 pounds. A random sample of last month's shipping records yielded a sample mean weight of 32.1 pounds for 64 packages. Does this indicate that the weights of packages recently shipped is less than 36.7 pounds? Use a = 0.01. Use the Classical Approach.
The scores on a test are normally distributed with a mean of 100 and a standard deviation of 20. Find the following scores: -3 standard deviations -2 standard deviations -1 standard deviations 1 standard deviations 2 standard deviations 3 standard deviations
Find (a) the mean, (b) the standard deviation on an examination in which grades of 70 and 88 correspond to standard scores of −0.6 and 1.4, respectively. Solve via matlab live text.
Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard deviation of 15. If you scored 124 on this intelligence test, what is your z-score on this distribution.

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Find the standard deviation of the following values: 2.58x10-5, 2.33x10-5, 3.28x10-5, 3.57x10-5