In a recent awards ceremony, the age of the winner for best actor was 38 and the age of the winner for best actress was 51. For all best actors, the mean age is 48.7 years and the standard deviation is 7.1 years. For all best actresses, themean age is 34.4 years and the standard deviation is 10.2 years. (All ages are determined at the time of the awards ceremony.) Relative to their genders, who had the more extreme age when winning the award, the actor or the actress?Explain.Since the z score for the actor is z=and the z score for the actress is z =theV had the more extreme age.

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Answered: In a recent awards ceremony, the age of…

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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One year Perry had the lowest ERA (earned-run average, mean number of runs yielded per nine innings pitched) of any male pitcher at his school, with an ERA of 2.83. Also, Karla had the lowest ERA of any female pitcher at the school with an ERA of 3.37. For the males, the mean ERA was 3.771 and the standard deviation was 0.861. For the females, the mean ERA was 4.979 and the standard deviation was 0.508. Find their respective z-scores. Which player had the better year relative to their peers, Perry or Karla? (Note: In general, the lower the ERA, the better the pitcher.) Perry had an ERA with a z-score of Karla had an ERA with a z-score of (Round to two decimal places as needed.)
It has been found that with the standard dosage of a drug, the change in people’s uric acid levelis normally distributed with a mean of 240 and a standard deviation of 60. What proportionof people receiving the standard dosage of this drug experience changes in uric acid levelbetween 210 and 270?
The mean weight of an adult Golden Retriever is 67 pounds with a standard deviation of 2.5 pounds. The mean weight of an adult St Bernard is 192 pounts with a standard deviation of 16 pounds. Rachel has a Golden Retriever that weighs 70.2 pounds and JD has a St Bernard that weighs 215 pounds. Who has the larger dog relative to their breed?
A published study says that 95 percent of American children are vaccinated against measles, with a standard deviation of 1.5 percent. You draw a sample of 100 children from your community and check their vaccination records, to see if the vaccination rate in your community is the same as the nationalaverage. What distribution will you use for this test, and why?
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The website www.nationmaster.com provides data on the amount of money countries have pledged for Iraqi reconstruction as of December 2005. On average, the entire population of countries pledged $1,582.07 per capita with a standard deviation of $4,417.24. The biggest donor is Kuwait, which has pledge $24,186.64 per capita for Iraqi reconstruction. How does the Kuwait pledge compare to that of all the other donor nations
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Aaliyah and Lloyd began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Aaliyah took a test in Social Studies and earned a 79.8, and Lloyd took a test in Science and earned a 68.4. Use the fact that all the students' test grades in the Social Studies class had a mean of 74.1 and a standard deviation of 9.6, and all the students' test grades in Science had a mean of 60.9 and a standard deviation of 8.6 to answer the following questions. a) Calculate the z-score for Aaliyah's test grade. 2 = [Round your answer to two decimal places.] b) Calculate the z-score for Lloyd's test grade. 2 = [Round your answer to two decimal places.] c) Which person did relatively better? O Aaliyah O Lloyd O They did equally well.

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