If the data is normally distributed, then for a small sample size (<30) , confidence intervals for mean is obtained by using student's t-distribution with (n-1) d.f.
If n=15. (x-bar)=50, and s=9, construct a confidence interval at a 80% confidence level. Assume the...
If n=13, ¯xx¯(x-bar)=47, and s=11, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place
If n=15, ¯xx¯(x-bar)=48, and s=15, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. < μμ < Submit Question
1. If n=28, (x-bar)=49, and s=6, find the margin of error at a 95% confidence level. Give your answer to two decimal places. 2. In a survey, 10 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $39 and standard deviation of $8. Find the margin of error at a 90% confidence level. Give your answer to two decimal places. 3. If n=20, (x-bar)=50, and s=20, construct...
If n=14, ¯xx¯(x-bar)=45, and s=13, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place
1:41 ohm.lumenlearning.com If n=11, 7(x-bar)=44, and s=10, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. Submit Question
If n=16, ū=35, and s=13, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. *<u<
if n=27,(has a line on top of x)--> x(x-bar)=38, and s=20, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give answer in one decmil place.
Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed c-0.98, x-12.4, s 0.91, n 13 Round to one decimal place as needed.)
A) Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c = 0.99, x equals = 12.4, s = 4.0, n =7 ( ? , ? ) (Round to one decimal place as needed.) B) The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. 1424 1224 980 697 730 834 723...
Construct the indicated confidence interval for the population mean μ using the t distribution. Assume the population is normally distributed c:0.98, x=13.1, s:0 82, n; 13 Round to one decimal place as needed)