The annual rainfall in a certain region is approximately normally distributed with mean= 41.3 inches and standard deviation = 6 inches.a) What percentage of years will have an annual rainfall of less than 38.3 inches?b) What percentage of years will have an annual rainfall of more than 51.3 inches?c) What percentage of years will have an annual rainfall of between 44.3 and 56.3inches?

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Answered: The annual rainfall in a certain region…

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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In 2011, the mean property crime rate (per 100,000 people) for 10 northeastern regions of a certain country was 2426. The standard deviation was 403. Assume the distribution of crime rates is unimodal and symmetric. What percentage of northeastern regions would you expect to have property crime rates between 1620 and 3232?
Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6. a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean. b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean. c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean. d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.
the driving distances (miles) to wor of 30 people are shown below. assume the population standard deviation is 8 miles. Find: 12, 9, 7, 3, 27, 21, 2, 30, 7, 4, 1, 10, 2, 9, 2, 28, 7, 10, 13, 6, 13, 7, 3, 13, 6, 6, 3, 13 ,12, 16, 18 a) the point estimate of the population mean b) the margin of error for a 95% confidence interval c) contruct a 95% confidence interval for the population mean.
8. Assuming that the heights of college women are normally distributed with mean 65 inches and standard deviation 2.5 inches. a) Sketch a normal curve labeling the horizontal axis with appropriate values b) What percentage of women are taller than 65 inches? c) What percentage of women are shorter than 65 inches? d) What percentage of women are between 62.5 inches and 67.5 inches? e) What percentage of women are between 60 inches and 70 inches?
A factory manager knows that the pieces produced by their machine will have lengths which are normally distributed, with mean 10 cm and standard deviation 4 mm. If this is true, then 95% of the pieces produced will have lengths between What?
The annual rainfall in a certain region is approximately normally distributed with mean 42.5 inches and standard deviation 6 inches. Round answers to the nearest tenth of a percent.a) What percentage of years will have an annual rainfall of less than 44 inches? %b) What percentage of years will have an annual rainfall of more than 40 inches? %c) What percentage of years will have an annual rainfall of between 39 inches and 43 inches?
The reading speed of sixth grade students is approximately normal with a mean speed of 115 word per minutes and a standard deviation of 19 words per minute?a) What is the reading speed of a sixth grader whose reading speed is at the 75th percentile?
A grading scale is set up for 1000 students’ test scores. It is assumed that the scores are normally distributed with a mean score of 75 and a standard deviation of 15. show your process to get full credits. a) How many students will have scores between 50 and 70? b) If 84.1% of students pass the test, what was the minimum passing score?
According to the records of an electric company serving the Boston area, the mean electric consumption for all households during winter is 1650 kilowatt-hours per month. Assume that the monthly electric consumptions during winter by all households in this area have a normal distribution with a mean of 1650 kilowatt-hours and a standard deviation of 320 kilowatt-hours. What percentage of the households in this area have a monthly electric consumption of 1838 to 1940 kilowatt-hours? Round your answer to two decimal places. P= Enter your answer in accordance to the question statement %
The ages of homeowners in a certain subdivision are in comparative dispersion with their incomes. The mean age is 50 years and the standard deviation of 11 years. The mean income is 50,500 pesos and a standard deviation of 4, 250 pesos. Determine the coefficient of variation of ages and the incomes of homeowners in a certain subdivision respectively. Express in percentage
In 2011, the mean property crime rate (per 100,000 people) for 10 northeastern regions of a certain country was 2367. The standard deviation was 394. Assume the distribution of crime rates is unimodal and symmetric. What percentage of northeastern regions would you expect to have property crime rates between 1973 and 2761.

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