Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (bagh musical aptitude).
Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (bagh musical aptitude). This year's results were:
The mean x aptitude score:
The nedian aptarade score:
The mode aptitude score:
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Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (bagh musical aptitude).
Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude).
Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were
From a dataset of the Scholastic Aptitude Test (SAT) score in 2016 obtained by business school...
From a dataset of the Scholastic Aptitude Test (SAT) score in 2016 obtained by business school students in the United States, the population mean score for the Mathematics part of the test was 515. Assume that the population standard deviation on the Mathematics parts of the test was 100. From a sample of 90 students, What is the probability of having a sample mean test score within 10 points of the population mean? b. What is the probability of having...
4. National SAT (Scholastic Aptitude Test) scores for high school students in the U.S.A. are normally...
4. National SAT (Scholastic Aptitude Test) scores for high school students in the U.S.A. are normally distributed with a mean of 500 and a standard deviation of 116. What is the percentage of students that score (a) above 700? (C) between 650 and 800? (b) under 400? (d) within 50 of the mean?
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
5. (20 pts) Suppose that the scores on a mathematics aptitude test are normally distributed. If...
5. (20 pts) Suppose that the scores on a mathematics aptitude test are normally distributed. If the test results have a mean score of 84 points and a standard deviation of 10.2 points, what is the probability that a student from this population scored 89 points or higher on this particular test? (Hint: first compute e Z-score.)
Suppose that 20% of the students who took a test from school A, and that the...
Suppose that 20% of the students who took a test from school A, and that the average of their scores on the teat was 80. Suppose that 30% of the students were from school B, and the average scores of the school is 76. Finally, suppose that 50% of the students are from school C , and that the average for yhat school is 84. If a student is selected at random from the entire group that took the test,...
A mandatory competency test for second-year high school students has a normal distribution with a mean...
A mandatory competency test for second-year high school students has a normal distribution with a mean of 495 and a standard deviation of 91. a) The top 3% of students receive $500. What is the minimum score you would need to receive this award? b) The bottom 5% of students must go to summer school. What is the minimum score you would need to stay out of this group?
(4)Five hundred students from a local high school took a college entrance examination. Historical data from the school record show that the standard deviation of test scores is 40. A random sampl...
(4)Five hundred students from a local high school took a college entrance examination. Historical data from the school record show that the standard deviation of test scores is 40. A random sample of thirty- six students is taken from the entire population of 500 students. The mean test score for the sample is three hundred eighty. Find (a) 95% confidence interval for the unknown population mean test score. (b) 95% confidence interval for the unknown population mean test score if...
The principal randomly selected six students to take an aptitude test. Their scores were 79 88...
The principal randomly selected six students to take an aptitude test. Their scores were 79 88 83 80 72 78 Assume that the population is normally distributed. a) Check assumptions and determine an appropriate interval procedure. b) Find a 90% confidence interval for the mean score for all students. (Do not use any functions in TI=>STAT=>TESTS to show your work.) c) Interpret the confidence interval.
Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were
4. National SAT (Scholastic Aptitude Test) scores for high school students in the U.S.A. are normally distributed with a mean of 500 and a standard deviation of 116. What is the percentage of students that score (a) above 700? (C) between 650 and 800? (b) under 400? (d) within 50 of the mean?
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
5. (20 pts) Suppose that the scores on a mathematics aptitude test are normally distributed. If the test results have a mean score of 84 points and a standard deviation of 10.2 points, what is the probability that a student from this population scored 89 points or higher on this particular test? (Hint: first compute e Z-score.)
(4)Five hundred students from a local high school took a college entrance examination. Historical data from the school record show that the standard deviation of test scores is 40. A random sample of thirty- six students is taken from the entire population of 500 students. The mean test score for the sample is three hundred eighty. Find (a) 95% confidence interval for the unknown population mean test score. (b) 95% confidence interval for the unknown population mean test score if...
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