posted by .

suppose a random sample of 360 students is drawn form a population of students. Among sampled, the average IQ score is 12 with standard deviation of 3. What is the upper confidence limit of the 95% confidence interval of the population

  • Statistics -

    average = 12
    n = 360
    upper limit is 12.31 according to my TI-83 Plus calculator

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Statistics

    A random sample of 14 college female students revealed their average height was 66.1 inches. a) How many students should be in a samle if a 95% confidence interval is to have a margin of error of only plus/minus 1 inch?
  2. Statistics

    Thirty random students took a calc test. If the sample mean was 90 & the standard deviation was 13.9, construct a 99% confidence interval for the mean score of all students. Is the answer 83.03 to 96.97?
  3. statistics

    what are the mean and standard deviation of a sampling distribution consisting of samples of size 16?
  4. stats

    The president of a large university wishes to estimate the average age of the students presently enrolled. From past studies, the standard deviation รณ is known to be 2 years. A sample of 50 students is selected and the mean is found …
  5. Math Statistics

    5. Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include Sample size: 36 students Sample mean: 29.643 years Sample standard deviation: 4.564 years …
  6. Statistics

    A random sample of 47 students studied for an average of 7.1 hours last week. If the population standard deviation is 1.2 hours, what is the 90% confidence interval for the population mean?
  7. Math

    The standard deviation of test scores on a certain achievement test Is 11.3. If a random sample of 81 students had a sample score of 74.6 , find a 90% confidence interval estimate for the average score of all students.

    To determine the views of a students on a particular campus about fraternities, an 11-point attitude scale was administered to a random sample of 40 students. This survey yielded a sample mean of 6 (the higher the score, the more favorable …
  9. Statistics

    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 …
  10. stats

    The average GRE score for math in a sample of students is 490. When you create a 95% confidence interval around this average, the lower limit is 260. What is the upper limit for this 95% confidence interval?

More Similar Questions