7.The following is the total profit earned by 2 individuals for a period of 4months.MonthsProfit (RM)1234A260240250250В400100500200a) Calculate the coefficient of variation for profit.b) Explain whether individual A or B has a stable profit? Assume that the mean weight of a 1-year-old infant is normally distributedwith mean and standard deviation of weight, equal to 9.5 kg and 1.1 kg,respectively. Calculate the percentage of babies who weigh:i) Less than 8.4kg.ii) Between 7.3 and 11.7kg.iii) Exceed12.8kg.8.

Answered: Assume that the mean weight of a…

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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Assume the birth weights at a local hospital have a normal distribution with a mean of 110 oz and a standard deviation of 15 oz. Draw a normal curve and label the mean and each value which is one, two, or three standard deviations above the mean. Then label each value which is one, two, or three standard deviations below the mean.
The average birth weight of elephants is 250 pounds. Assume that the distribution of birth weights is Normal with a standard deviation of 40 pounds. Find the birth weight of elephants at the 90th percentile.
Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 44 feet. Let X = distance in feet for a fly ball. Find the 80th percentile of the distribution of fly balls. (Round your answer to one decimal place.)
The weight X of grass seeds in bags marked 50 lbs varies according to a normal distribution with mean 50 lbs and standard deviation 1 ounce (0.0625 lbs). What proportion of all bags weigh less than 50 pounds?
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 67 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 64 miles per hour and 70 miles per hour. (Assume the data set has a bell-shaped distribution.)
The concentration of blood hemoglobin in middle-aged adult females is normally distributed with a mean of 13.5 g/dL and a standard deviation of 0.86 g/dL. Determine the hemoglobin levels corresponding to the: 90th percentile Middle 85% of middle-aged adult female hemoglobin levels
Assume that the distribution of scores on a college entrance exam is normally distributed with a mean of 490 and a standard deviation of 43. For each score in the table below, convert the raw score into a corresponding z-score. original score Z-score 621 398 586 710
According to data for a population, 3-year-old boys have a mean height of 39 inches and a standard deviation of 2 inches. Assume the distribution is approximately Normal. Find the percentile measure for a height of 41 inches for a 3-year-old boy
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 71 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 62 miles per hour and 80 miles per hour. Assume the data set has a bell shaped distribution.
A normally distributed data set has a mean of O and a standard deviation of 2. What is the percent of values between -6.0 and 6.0? (make sure to include % sign in answer.)

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Assume that the mean weight of a 1-year-old infant is normally distributed with mean and standard deviation of weight, equal to 9.5 kg and 1.1 kg, respectively. Calculate the percentage of babies who weigh: i) Less than 8.4kg. ii) Between 7.3 and 11.7kg. iii) Exceed12.8kg. 8.