Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 107. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 535.9. P(X> 535.9) = Enter your answer as a number accurate to 4 decimal places. If 18 of the men are randomly selected, find the probability that their mean score is at least 535.9. P(M> 535.9) = Enter your answer as a number accurate to 4 decimal places. Assume that any probability less than 5% is sufficient evidence to conclude that the preparation course does help men do better. If the random sample of 18 men does result in a mean score of 535.9, is there strong evidence to support the claim that the course is actually effective? OYes. The probability indicates that it is (highly ?) unlikely that by chance, a randomly selected group of students would get a mean as high as 535.9. ONo. The probability indicates that it is too possible by chance alone to randomly select a group of students with a mean as high as 535.9.

Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 107. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 535.9. P(X> 535.9) = Enter your answer as a number accurate to 4 decimal places. If 18 of the men are randomly selected, find the probability that their mean score is at least 535.9. P(M> 535.9) = Enter your answer as a number accurate to 4 decimal places. Assume that any probability less than 5% is sufficient evidence to conclude that the preparation course does help men do better. If the random sample of 18 men does result in a mean score of 535.9, is there strong evidence to support the claim that the course is actually effective? OYes. The probability indicates that it is (highly ?) unlikely that by chance, a randomly selected group of students would get a mean as high as 535.9. ONo. The probability indicates that it is too possible by chance alone to randomly select a group of students with a mean as high as 535.9.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A professor knows that her statistics students' final exam scores have a mean of 79 and a standard deviation of 12.4. In his class, an "A" is any exam score of 90 or higher. This quarter she has 25 students in her class. What is the probability that 7 students or more will score an "A" on the final exam?
Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard deviation σ=20. Find the probability that a randomly selected adult has an IQ between 93 and 117.
For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 515 and a standard deviation of 170. The grading process of this years exam has just begun. The average score of the 40 exams graded so far is 490. What is the probability that a sample of 40 exams will have a mean score of 490 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
The percent of fat calories that a person consumes each day is normally distributed with a mean of about 35 and a standard deviation of about ten. Suppose that 9 individuals are randomly chosen. Let X = average percent of fat calories. For the group of 9, find the probability that the average percent of fat calories consumed is more than six. (Round your answer to four decimal places.)
Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 131000 dollars. Assume the standard deviation is 30000 dollars. Suppose you take a simple random sample of 83 graduates.Find the probability that a single randomly selected salary is at least 129000 dollars.P(X > 129000) = Find the probability that a sample of size n=83n=83 is randomly selected with a mean that is at least 129000 dollars.P(M > 129000) = Enter your answers as numbers accurate to 4 decimal place
Scores for a common standardized college aptitude test are normally distributed with a mean of 489 and a standard deviation of 111. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect.If 1 of the men is randomly selected, find the probability that his score is at least 566.P(X > 566) = Enter your answer as a number accurate to 4 decimal places.If 6 of the men are randomly selected, find the probability that their mean score is at least 566.P(M > 566) = Enter your answer as a number accurate to 4 decimal places.Assume that any probability less than 5% is sufficient evidence to conclude that the preparation course does help men do better. If the random sample of 6 men does result in a mean score of 566, is there strong evidence to support the claim that the course is actually effective? Yes. The probability indicates that is is (highly ?) unlikely that by chance, a randomly…
The NJ Department of Health has reported the average life span of NJ residents is 81 years. If the standard deviation is σ = 4 years, what is the probability of a person living to at least 92 years of age?
Scores for a common standardized college aptitude test are normally distributed with a mean of 500 and a standard deviation of 96. Randomly selected students are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 1 student is randomly selected, find the probability that their score is at least 550.6. P(X> 550.6) = Enter your answer as a number accurate to 3 decimal places. If 13 students are randomly selected, find the probability that their mean score is at least 550.6. P(X > 550.6) = Enter your answer as a number accurate to 3 decimal places. Assume that any probability less than 5% is sufficient evidence to conclude that the preparation course does help students perform better on the test. If the random sample of 13 students does resul in a mean score of 550.6, is there strong evidence to support the claim that the course is actually effective? Yes. The probability indicates that it is (highly?)…
CH621 Scores for a common standardized college aptitude test are normally distributed with a mean of 514 and a standard deviation of 102. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 14 of the men are randomly selected, find the probability that their mean score is at least 565.8.P(M > 565.8) = Enter your answer as a number accurate to 4 decimal places.
Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 104. Randomly selected men are given a Prepartion Course before taking this test. Assume, for sake of argument, that the Preparation Course has no effect on people's test scores.If 1 of the men is randomly selected, find the probability that his score is at least 548.6.P(X > 548.6) = Enter your answer as a number accurate to 4 decimal places.If 14 of the men are randomly selected, find the probability that their mean score is at least 548.6.P(x-bar > 548.6) = Please explain how you get this on calc (ti) and how to use the Z table. Thank you.
Scores for a common standardized college aptitude test are normally distributed with a mean of 510 and a standard deviation of 105. Randomly selected men are given a Prepartion Course before taking this test. Assume, for sake of argument, that the Preparation Course has no effect on people's test scores.If 1 of the men is randomly selected, find the probability that his score is at least 580.P(X > 580) = Enter your answer as a number accurate to 4 decimal places.If 9 of the men are randomly selected, find the probability that their mean score is at least 580.P(x-bar > 580) = Enter your answer as a number accurate to 4 decimal places. A fitness company is building a 20-story high-rise. Architects building the high-rise know that women working for the company have weights that are normally distributed with a mean of 143 lb and a standard deviation of 29 lb, and men working for the company have weights that are normally distributed with a mean of 178 lb and a standard deviation or…