An anthropologist is interested in estimating the age of a series of 582 fossils that were recently discovered. How many fossils would need to be tested to estimate their true average age with 95% confidence and a margin of error of no more than 1000 years?Assume the standard deviation of fossils discovered is known to be 10000 years.

Answered: An anthropologist is interested in…

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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Similar questions

Suppose that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally distributed with a mean of 3.3 unitsmL. Suppose also that exactly 95% of healthy individuals have TSH levels below 6.2 unitsmL. Find the standard deviation of the distribution of TSH levels of healthy individuals. Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places.
In a medical examination, 300 people undergo a height measurement and was found out that the average height of all are 150cm. If the standard deviation is 19, find the number of people that fall under the given conditions: With height less than 132cm. With height from 140 cm to 180 cm With height taller than 200 cm With height from 160cm to 195 cm With height from 150 cm to 200cm Determine the range of the height that includes the central 60% 45% of the people who undergo the medical examinations are qualified to be part of the varsity. What is the limit height to be part of the varsity?
In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 99% confident that your sample mean is within 20 minutes of the population mean? Assume that the standard deviation of the population of monthly time spent on the internet is 129 min. show formulas and draw all curves.
Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard deviation of 110 hours. If exactly 95% of the bulbs die before 925 hours, find the mean lifetime of the bulbs. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place. hours
Suppose that the heights of adult women in the United States are normally distributed with a mean of 64.5 inches and a standard deviation of 2.2 inches. Lena is taller than 90% of the population of U.S. women. How tall (in inches) is Lena? Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
The population of weights of a particular fruit is normally distributed, with a mean of 248 grams and a standard deviation of 26 grams. If 11 fruits are picked at random, then 3% of the time, their mean weight will be greater than how many grams? Round to the nearest gram.
Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard deviation of 120 hours. If exactly 98% of the bulbs die before 900 hours, find the mean lifetime of the bulbs. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
In a group of 10 workers, the wage of the lowest paid worker is Dollar 25 less than the average wage of others. Show that the standard deviation of wages is equal to 7.53?
Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.2 years. Suppose also that exactly 20% of the tubes did before 5 years. Find the mean lifetime of TV tubes. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
Solve step by step in digital format Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000and a standard deviation of $3,000 a) What percentage of the employees will have incomes greater than $20,000 ?b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 ?

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