d:bre:The table below shows a relative-frequency distribution for the heights of femalestudents at a midwestern college. The heights are approximately normallydistributed with mean 64.5 inches and standard deviation 1.9 inches.Click here to view page 1 of the standard normal table.Click here to view page 2 of the standard normal table.Height(inches)FrequencyfRelative frequency60-6130.010161-6260.020162-63240.080563-64670.224864-65950.318865-66640.214866 67280.094067 6890.030268 6920.00672981.0000Quecion 1 (1tion 5 (0Use a normal distribution with u = 64.5 and o= 1.9 to approximate theHpercentage of these students having heights within any specified range. Ineach part, (i) obtain the exact percentage from the table, (ii) use thenormal distribution to approximate the percentage, and (iii) compare youranswers.a. The percentage of female students with heights between 62 and 63inches.(i) The actual percentage of female students with heights between 62 and63 inches is 8.05%.(Type an integer or a decimal.)(ii) The normal distribution approximates the percentage of femalestudents with heights between 62 and 63 inches to be %.(Round to two decimal places as needed.)correct: 1

Relative Frequency Relative frequency is defined as the number of instances of a specific task…

Answered: The table below shows 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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Suppose that annual precipitation is normally distributed, with mean 50 inches, and standard deviation 12 inches. Find the 65th percentile of the precipitation distribution
The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied year round. Approximate the mean and standard deviation square footage. Click the icon to view the data table. The mean square footage is x=. (Round to the nearest integer as needed.)
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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.)
Cardiovascular Disease, Pulmonary Disease The duration of cigarette smoking has been linked to many diseases, including lung cancer and various forms of heart disease. Suppose we know that among men ages 30-34 who have ever smoked, the mean number of years they smoked is 12.7 with a standard deviation of 5.2 years. For women in this age group, the mean number of years they smoked is 9.4 with a standard deviation of 3.1. (Assume that number of years spent smoking can be measured exactly and no continuity correction is necessary. Round your answers to four decimal places.) USE SALT (a) Assuming that the duration of smoking is normally distributed, what proportion of men in this age group have smoked for more than 21 years? (b) Assuming that the duration of smoking is normally distributed, what proportion of women in this age group have smoked for more than 21 years? Need Help? Read It
A community college Math instructor feels that the average age of community college students decreased since they started teaching 25 years ago. Looking up data from the year the instructor started teaching, the mean age of community college students was 24.3 years old, with a population standard deviation of 2.2 years. The Math instructor took a sample of 40 of their current community college students and found that the sample had a mean age of 23.7 years old. Assume the population of ages of community college students is normally distributed and that the population standard deviation has remained the same. Test at the 5% significance level if the mean age of community college students is now less than 24.3 years old. The question is attached.

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