fSuppose that you take an exam with 391 possible points and are told that that mean score is 270 and that the standard deviation is 22. You are also told that you got 346. Did you do well on the exam? Explain your answer.Determine the z-score and interpret this score.A score of 346 has a z-score of. This is standard deviations the mean for this exam. Thethis score isthe mean, this is ascore.(Round to two decimal places as needed.)standard deviationsstates that approximately 99.7% of the observations lie withinstandard deviations of the mean. Sine

Mean() = 270Standard deviation () = 22

Answered: ← Suppose that you take an exam with…

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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Scores on a mathematics assessment test for eighth-graders have a mean of 284, a 10th percentile of 232, a 25th percentile of 256, a 75th percentile of 310, and a 90th percentile of 328. Interpret each of these numerical descriptive measures. Interpret the mean value of 284. Choose the correct answer below. OA. For this problem, the mean value of 284 represents the average test score on a mathematics assessment test for eighth-graders B. For this problem, the mean value of 284 represents the middle test score when the scores are arranged in ascending (or descending) order OC. For this problem, the mean value of 284 represents the variation in the test scores on a mathematics assessment test for eighth-graders D. For this problem, the mean value of 284 represents the range of test scores on a mathematics assessment test for eighth-graders
Suppose that the mean score of a class of 34 students was 73. The 19 male students in the class had a mean score of 72. What was the mean score for the 15 female students? Mean Score for Female Students =
Player His Average Points Other's Average Points Other's Standard Deviation Fredo 153 163 15 Karl 163 183 35 Table 2.57 a. Which player had the higher average points when compared to the other players on his team? Fredo O Karl b. Use Table 2.57 to find the value that is three standard deviations above the mean for each team. Enter the exact answers. Fredo's team: Number Karl's team: Number C. Use Table 2.57 to find the value that is three standard deviations below the mean for each team. Enter the exact answers. Fredo's team: Number Karl's team: Number Next Back Question Menu- Quit & Save Submit Assignment 502 PM 200
One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the teachers were measured before and after the seminar. A positive number for change in attitude indicates that a teacher's attitude toward math became more positive. The twelve change scores are as follows. 4; 7; −1; 1; 0; 5; −2; 2; −1; 6; 5; −3 Part (a) What is the mean change score? (Round your answer to two decimal places.)
Your cat weighs 13 lbs. If the mean for weight of cats is 10 pounds and the standard deviation is two pounds, what percentage of cats weigh more than your cat? Round to the nearest hundredth of a percent. Example: 0.0125 would be written as 1.25% Answer = Blank 1% of cats weigh more than your cat
For each of the states and Puerto Rico, the histogram below shows the average property damage (in millions of dollars) caused by tornadoes over a 50 year period. Which of the following statements is TRUE with regards to the relationship between the mean and the median? Average Tornado Damage for the 50 States and Puerto Rico (1950-1999) Average property damage (Smallions) O The median is greater than the mean. The median is less than the mean. O There is no way of knowing what kind of relationship the mean and median have. O The median is equal to the mean.
Teddy is the manager for the touring rock band Hi Phone. For the band's recently ended summer tour, Teddy kept track of the attendance of each of the band's concerts. The histogram below summarizes the data. Use the histogram to answer each of the questions. Frequency (Number of concerts) (a) One class is the most frequent. How many concerts are in this class? 10- 9. 8- (b) According to the histogram, what is the total number of concerts? 6- 5- (c) What is the class width? 50 to 174 175 to 299 300 to 424 425 to 549 550 to 674 Number of people who attended Explanation Check O 2021 McGraw-Hill Education, All Rights Reserved. Terms of Use| Privacy Accessibility étv W 6 The It esc # $ % @ 5 6 7 8 1 2 3 4 Q W E R tab K L S D F G A caps lock N M Z C V shift ention command
In Statsville there’s a city-wide speed limit of 30 mph.If you are caught speeding the fine is $100 plus $10 forevery mile per hour you were over the speed limit. Forexample, if you’re ticketed for going 45 mph, your fine is100 + 10145 - 302 = +250. Last month all the driverswho were fined for speeding averaged 42 mph with astandard deviation of 7 mph. What were the mean andstandard deviation of the fines?A) $120 and $70 B) $220 and $7C) $220 and $70 D) $220 and $170E) $420 and $70
Thao earned the following scores on her six management exams last semester. 79, 79, 42, 88, 79, 93 Ф Find the mean, the median, and the mode for Thao's scores. The mean for Thao's scores is (Type an integer or a decimal. Round to the nearest hundredth as needed.)
A student earned grades of 74, 75, 79, and 91 on her four regular tests. She earned a grade of 75 on the final exam and 84 on her class projects. Her combined homework grade was 86. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? 80.0 80.6 80.5 81.1
Sam took 4 courses last semester: Spanish, Physics, Biology, and Calculus. The means and standard deviations for the final exams, and Sam's scores are given in the table below. Convert Sam's score into z scores. Subject Mean Stand. dev. Sam's score Sam's z score Spanish 44 12 47 Physics 60 14 84.5 Biology 77 10 82 Calculus 70 12 79 On what exam did Sam have the highest relative score?(Enter the subject.) In the Biology class, there was a student with a z-score of 1.2. What score did that student earn on the exam?
In a psychology class, 40 students have a mean score of 89.5 on a test. Then 24 more students take the test and their mean score is 78.3.What is the mean score of all of these students together? Round to one decimal place.

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