Question

Scores on an aptitude test are distributed with a mean of 220 and a standard deviation...

Scores on an aptitude test are distributed with a mean of 220 and a standard deviation of 30. The shape of the distribution is unspecified. What is the probability that the sampling error made in estimating the population mean by the mean of a random sample of 50 test scores will be at most 5 points? Round to three decimal places.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT)...
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT) for the school's male and female applicants. A random sample of 16 male applicants results in a SAT scoring mean of 1146 with a standard deviation of 30. A random sample of 9 female applicants results in a SAT scoring mean of 1054 with a standard deviation of 33. Using this data, find the 98% confidence interval for the true mean difference between the...
Scores for a common standardized college aptitude test are normally distributed with a mean of 483...
Scores for a common standardized college aptitude test are normally distributed with a mean of 483 and a standard deviation of 101. Randomly selected men are given a Test Prepartion Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 550.8. P(X > 550.8) = Enter your answer as a number accurate to 4 decimal places. NOTE:...
The Scholastic Aptitude Test (SAT) scores in mathematics at a certain high school are normally distributed,...
The Scholastic Aptitude Test (SAT) scores in mathematics at a certain high school are normally distributed, with a mean of 550 and a standard deviation of 100. What is the probability that an individual chosen at random has the following scores? (Round your answers to four decimal places.) (a) greater than 650 (b) less than 450 (c) between 600 and 750 Use the table of areas under the standard normal curve to find the probability that a z-score from the...
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT)...
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT) for the school's in-state and out-of-state applicants. A random sample of 17 in-state applicants results in a SAT scoring mean of 1220 with a standard deviation of 44. A random sample of 11 out-of-state applicants results in a SAT scoring mean of 1140 with a standard deviation of 26. Using this data, find the 98% confidence interval for the true mean difference between the...
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT)...
The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT) for the school's male and female applicants. A random sample of 13 male applicants results in a SAT scoring mean of 1061 with a standard deviation of 27. A random sample of 9 female applicants results in a SAT scoring mean of 1026 with a standard deviation of 56 . Using this data, find the 98% confidence interval for the true mean difference between...
Scores for a common standardized college aptitude test are normally distributed with a mean of 492...
Scores for a common standardized college aptitude test are normally distributed with a mean of 492 and a standard deviation of 100. Randomly selected men are given a Test Prepartion Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 533.3. P(X > 533.3) = ? 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 503...
Scores for a common standardized college aptitude test are normally distributed with a mean of 503 and a standard deviation of 110. Randomly selected men are given a Test Prepartion Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 553.8. P(X > 553.8) = Enter your answer as a number accurate to 4 decimal places. NOTE:...
Scores for a common standardized college aptitude test are normally distributed with a mean of 493...
Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 115. 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 545.2. P(X > 545.2) =   Answer as a number accurate to 4 decimal places. If 14...
The mean score for freshmen on an aptitude test at a certain college is 530 ​,...
The mean score for freshmen on an aptitude test at a certain college is 530 ​, with a standard deviation of 50 . Assume the means to be measured to any degree of accuracy. What is the probability that two groups selected at​ random, consisting of 54 and 50 ​students, respectively, will differ in their mean scores by ​(a) more than 11 ​points? ​ (b) an amount between 2 and 8 ​points? ​(a) The probability the difference is more than...
SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You...
SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to limit the margin of error of your 95% confidence interval to 25 points, how many students should you sample?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT