Question

Suppose that scores on Statistics of government and public School in UMAC are normally distributed. To...

Suppose that scores on Statistics of government and public School in UMAC are normally distributed. To estimate the average score on the for all students, I take my class as a random sample of size 25. The sample yielded mean, = 35 and sample standard deviation, s = 15. Give a 95% confidence interval for the average score on the of Statistics for all government and public School students.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose scores on exams in statistics are normally distributed. A random sample of 28 scores is...
Suppose scores on exams in statistics are normally distributed. A random sample of 28 scores is taken and gives a sample mean of 72 and sample standard deviation of 4. What is the 99% confidence interval for the true (population) mean of statistics exam scores?
Scores on the SAT Mathematics test are believed to be Normally distributed. The scores of a...
Scores on the SAT Mathematics test are believed to be Normally distributed. The scores of a simple random sample of five students who recently took the exam are 550, 620, 710, 520, and 480. What is a 95% confidence interval for µ, the population mean score on the SAT Math test?
Scores of students in a large Statistics class are normally distributed with a mean of 75...
Scores of students in a large Statistics class are normally distributed with a mean of 75 points and a standard deviation of 5 points. Find the probability that a student scores more than 80 points If 100 students are picked at random, how many do you expect to score below 70 points? If top 10% of students obtain an A grade, how much should a student obtain to get an A grade. Suppose four students are picked at random, find...
Suppose the preliteracy scores of three-year-old students in the United States are normally distributed. Shelia, a...
Suppose the preliteracy scores of three-year-old students in the United States are normally distributed. Shelia, a preschool teacher, wants to estimate the mean score on preliteracy tests for the population of three-year-olds. She draws a simple random sample of 20 students from her class of three-year-olds and records their preliteracy scores (in points). 74,79,83,85,88,90,94,95,95,97,99,99,100,103,105,105,106,107,107,108 Calculate the sample mean (?⎯⎯⎯x¯), sample standard deviation (?s), and standard error (SE) of the students' scores. Round your answers to four decimal places. Determine the...
Scores of students in a large Statistics class test are normally distributed with a mean of...
Scores of students in a large Statistics class test are normally distributed with a mean of 75 points and a standard deviation of 5 points.Find the probability that a student scores more than 80 pointsIf 100 students are picked at random, how many do you expect to score below 70 points?If top 10% of students obtain an A grade, how much should a student obtain to get an A grade.Suppose four students are picked at random, find the probability that...
SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300....
SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300. An administrator at a college is interested in estimating the average SAT score of first-year students. If the administrator would like to limit the margin of error of the 88% confidence interval to 25 points, how many students should the administrator sample? Make sure to give a whole number answer.
SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300....
SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300. An administrator at a college is interested in estimating the average SAT score of first-year students. If the administrator would like to limit the margin of error of the 88% confidence interval to 25 points, how many students should the administrator sample? Make sure to give a whole number answer. answer ____
The data below represent a random sample of 9 scores on a statistics quiz. (The maximum...
The data below represent a random sample of 9 scores on a statistics quiz. (The maximum possible score on the quiz is 10.) Assume that the scores are normally distributed with a standard deviation of 2.2. Estimate the population mean with 95% confidence. 8,9,8,4,4,7,2,10,8 Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. Confidence Interval =
In the population, IQ scores are normally distributed with a mean of 100. A charter school...
In the population, IQ scores are normally distributed with a mean of 100. A charter school wants to know if their students have an IQ that is higher than the population mean. They take a random sample of 15 students and find that they have a mean IQ of 109 with a sample standard deviation of 20. Test at 1% significance level whether the average IQ score in this school is higher than the population mean. a) Write down null...
assume that test scores are normally distributed. A random sample of 25 SAT scores has a...
assume that test scores are normally distributed. A random sample of 25 SAT scores has a mean 1120 with a standard deviation 190. If (a,b) is the 95% confidence interval for the mean of all SAT scores constructed based on this sample, then, to the nearest whole number, a= b=
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT