find the standard deviation Itemsweightsodium150175sugarspicesvegetable 125fruits125170pulseswheat125150Rice130Gramflour150bread140

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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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Mean 2, x is 5 and z score is 4 find standard deviation
Assume that the average time for train journeys between London and Brighton is 157 minutes with a standard deviation of 12 minutes. Assume further that a certain journey took 130 minutes. Calculate the z-value for this trip. Enter your answer with two decimals and remember to use commas as decimals.What is the Z-value here?
When standardizing, the mean becomes 0 and the standard deviation becomes 1. True False
A recent study showed that the residents of a local town reported sleeping an average of u =7.97 hours each night with a standard deviation of o =0.424. A random sample of 10 residents had a sample mean of X = 7.766. Find the z-value of this sample mean. Write your answer to two decimal places.
A normal distribution has mean u= 56 and standard deviation o = 20. Find and interpret the z-score forx=59. The z-score for x = 59 is So 59 is standard deviations (Choose one) v the mean u = 56.
Interpret the Z score for a student who scored an 91 on an exam that had a mean of 86 and a standard deviation of 5. One mean above the standard deviation One standard deviation above the mean One standard deviation below the mean One mean below the standard deviation
Define the mean squared error (MSE)?
The Body Mass Index (BMI) of 60-year-old men follow a distribution that is approximately Normally distributed with a mean of 30 and a standard deviation of 6. Define the variable X, and state its distribution using the notation
CV = (σ/mean) --> standard deviation / mean.Express the above equation carefully?
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1544 and the standard deviation was 314.The test scores of four students selected at random are 1940, 1290, 2250,and 1420.Find the z-scores that correspond to each value and determine whether any of the values are unusual. (Round to 2 decimal places as needed.)
How to find the standard deviation after we have found the range?
of error, Claim: The standard deviation of pulse rates of adult males is more than 11 bpm. Fora random sample of 148 adult males, the pulse rates have a standard deviation of 11.6 bpm. Find the value of the test statistic. r7 *.* The value of the test statistic is (Round to two decimal places as needed.)

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Items weight sodium 150 sugar spices vegetable 125 fruits 175 125 170 pulses wheat 125 150 Rice 130 Gram flour 150 bread 140