What is meant by 95% confidence interval of the mean?
What is meant by 95% confidence interval of the mean? => 95% of the specific sample means will fall within ± 1.96 standard errors of the population mean. or 95% of the specific sample means will fall within ± 2.58 s..
95% confidence interval of a population mean worked out on a sample s..
95% confidence interval of a population mean worked out on a sample size of 10 is, 0.26 < μ < 0.38. What is the likely 95% confidence interval of the mean of the same population worked out on a sample size of 20? => 0.28..
What are the 95% and 99% confidence intervals for the population mean,..
What are the 95% and 99% confidence intervals for the population mean, if the variance is 0.64? Given that sample size = 60, sample mean = 11.21. => (11.29, 11.371) and (10.933, 11.467) or (10.997, 11.403) and (10.997, 11.403) or (11.01, 11.41) and ..
The 95% confidence interval for the mean number of mangoes in a carton..
The 95% confidence interval for the mean number of mangoes in a carton is between 48.12 and 51.88. If a random sample of 27 cartons were used to determine this interval, what was the standard deviation? => 2 or 3 or 4 or 5..
The prices of 1 gallon of premium gasoline in U.S dollars in a sample ..
The prices of 1 gallon of premium gasoline in U.S dollars in a sample of seven foreign countries is shown. What is the point estimate for the mean? Find the 98% confidence interval of the mean for the prices of 1 gallon of premium gasoline in U.S. 3..
Select the correct statement(s).I. Increase in sample size will make t..
Select the correct statement(s). I. Increase in sample size will make the confidence interval of the population mean wider. II. A 90% confidence interval will be wider than a 99% confidence interval. III. Sample mean ca..
The mean score on a standardized test is 100 with a standard deviation..
The mean score on a standardized test is 100 with a standard deviation of 8. A random sample of 48 scores was found to have a mean of 98. Find the 95% confidence interval. => The interval is between 97.75 and 102.25 or The interval is betw..
A study of 50 basket ball players showed that their scoring average is..
A study of 50 basket ball players showed that their scoring average is 15.8 points per game. The 90% confidence interval of the mean score for all players is between 14.1 and 17.5. Find the 90% confidence interval of the mean score(μ) i..
A random sample of 100 similar iron bars manufactured at a factory had..
A random sample of 100 similar iron bars manufactured at a factory had a mean diameter of 6.43 mm and a variance of 0.032 mm 2 . Find 95% confidence interval and 99% confidence interval. Which interval is smaller? => (6.40, 6.47) and (6.38..
The 95% confidence interval for the mean number of sheets of paper in ..
The 95% confidence interval for the mean number of sheets of paper in a ream is between 452.76 and 447.24. If the standard deviation is 10 papers, find the size of the random sample that was used to determine this interval. => 5.52 or 50 or 1.41 or 7.09..
See what our Users say :
It is a really good tutoring. The tutors are thoughtful, helpful, active to help students. A lot of ideas they have. Encouraging students too. -Riley
She should be the head of Tutor Vista. She knows how to treat her students. Her teaching style is spectacular.
I really liked Tutor Vista, I am confident I will get an A+ in my math test now, My sincere thanks to all the tutors -George
The tutor really touched the right methods and formulas that would help me the most as well as a helpful practice sheet to test my knowledge of the subject. Great work!
Looking for More Help!
