Janai and Roscoe began arguing about who did better on their tests, but they couldn't decide who didbetter given that they took different tests. Janai took a test in Art History and earned a 78.6, and Roscoetook a test in Science and earned a 66. Use the fact that all the students' test grades in the Art Historyclass had a mean of 75.9 and a standard deviation of 9.4, and all the students' test grades in Science had amean of 61 and a standard deviation of 10.1 to answer the following questions.a) Calculate the z-score for Janai's test grade.z =b) Calculate the z-score for Roscoe's test grade.z =c) Which person did relatively better?JanaiRoscoeThey did equally well.

Given For Janai X=78.6 Population Mean=75.9 Population standard deviation=9.4 For Roscoe Population…

Answered: test in Science and earned a 66. Use…

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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please solve : B, C, and D ch 9
Plz explain. Ty
Use z scores to compare the given values. The tallest living man at one time had a height of 233 cm. The shortest living man at that time had a height of 89.9 cm. Heights of men at that time had a mean of 176.34 cm and a standard deviation of 5.47 cm. Which of these two men had the height that was more extreme? Since the z score for the tallest man is z= height that was more extreme. (Round to two decimal places.) and the z score for the shortest man is z = the man had the
On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what was his z-score?
The local pilots association examined records from this year's census of its members. Tom is a member, and the census shows that he has 4210 hours of flight experience. The census also shows that among all members of the association the mean flight experience is 3095 hours with a standard deviation of 679 hours. Find the z-score of Tom's flight experience relative to the flight experiences of all the members of the pilots association. Round your answer to two decimal places.
Assume that the SAT test scores are normally distributed with a mean score of 1200 and a standard deviation of 150. ACT test scores are normally distributed with a mean score of 22 and a standard deviation of 3 Mike scored 1250 on the SAT. What proportion of all test takers did Mike score higher than? If Mike scored a 1250 on the SAT and Jes scored a 26 on the ACT, then who's score is relatively better?
On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70, what was his z-score? Use the formula Z where is the mean, o is σ the standard deviation, and x is Roberto's score. Round to 4 decimal places. X н =
Note: The standard deviation is defined as the average distance of the class scores from the mean. Note: The variance is defined as average squared distance of the class scores from the mean. Sameer's score in a quiz was 25 and he was five standard deviations above the mean in this quiz. The mean was 20. The average squared distance of the scores from the mean in this quiz is: Select one: a. -3 b. 2 c. 3 d. -2 e. 1 f. -1
Beth scored 88 on a nutrition test. The class mean was 81 and the standard deviation was 3.2. What is Beth's T-score? Group of answer choices 47.8 71.9 22.4 Beth's T-score cannot be calculated. Not enough information is provided.
You scored a 85 on a stats test with a mean of 70 and a standard deviation of 7. Youalso score a 90 on a Bio test with a mean of 80 and a standard deviation of 8. Inwhich test did you score better, relative to the other test takers? What measure areyou using to answer this question?
Use z scores to compare the given values. The tallest living man at one time had a height of 227 cm. The shortest living man at that time had a height of 98.2 cm. Heights of men at that time had a mean of 172.36 cm and a standard deviation of 5.76 cm. Which of these two men had the height that was more extreme? and the z score for the shortest man is z = the man had the height that was more extreme. Since the z score for the tallest man isz = (Round to two decimal places.)
Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?

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