The statistical software output for this problem is:
Hence,
90% confidence interval will be:
(1.86, 3.83)
please help me answer this statistic question about
estimation/confidence interval
Confidence interval (1 –a) 100% for p where u is the mean value of a normally distributed population with variance o2 = 9, given by formula : (x - 2-a ovn ,x+27-4 ovn ) Ifo is unknown, then the interval formula (1 - a) x 100% for u are : (-t(n-1), a Syn , 8+ t(n-1), 4 Sun) Calculate the confidence interval limits 90% for u if x = 19.3.S2=10.24...
construct the indicated confidence interval for the population
mean mu using the t
Homework: Section 6.2 Homework Score: 0 of 1 pt 3 of 9 (2 complete) 6.2.9-T Construct the indicated confidence interval for the population mean y using the I-distribution. Assume the population is normally distributed. c=0.95, x = 12.2, s = 2.0, n=10 (Round to one decimal place as needed.)
In confidence interval estimation, we define the level of significance as: a) 1 + confidence level I. b) confidence level-1 c) 1-confidence level d) α-1 e) 1-a If we are given a sample with ơ unknown, we should use the t-distribution unless the sample size a) 5 gb) 25 : c) 30 d) 500 e) none of these In hypothesis testing, we make a Type II error when we: a) fail to reject a true Ho b) reject a true...
(36) Estimators are used in two different ways: point estimation and confidence estimation. (1) True. (2) False. (37) Which of the statements about large-sample estimation is correct? (1) An estimator should be unbiased and the spread (as measured by the mean) should be as small as possible. (2) The distance between an estimate and the true value of the statistic is called the error of estimation. (3) The 95% Margin of error is: 1.96 x Standard error of the estimator. (4) A good confidence interval is as...
Construct the confidence interval for the population mean μ.
Construct the confidence interval for the population mean μ 0.98, x: 5.9, σ: 0.6, and n: 44 A 98% confidence interval for μ is OD (Round to two decimal places as needed.)
Prior to significance testing and confidence interval estimation, analysts should begin exploring and describing the data with summary statistics and graphical presentations. True False
- The required sample size for the interval estimation of the population mean μ can be computed if we specify the population standard deviation σ, the value of zα/2zα/2based on the confidence level 100(1 − α)% and the desired margin of error E. A) True B) False - In stratified random sampling, the population is first divided up into mutually exclusive and collectively exhaustive groups, called strata. Then simple random samples are drawn from each stratum, which are proportional to...
Determine the margin of error for a 95% confidence
interval to estimate the population mean when s=37 for the sample
sizes below.
Solve for c) n=46.
htmathe Student Homework Theme =41778etod y FALL 2019 STAT 3309 CRN 120961 Homework: Section 8.3 Confidence intervals with s Homework Score: 0 57 of 1 pt 28.3.22-T Determine the margin of error for a 95% confidence interval to estimate the E a) n. 13 b) n = 30 c) n46 a) The margin of...
A confidence interval for the population mean is an interval constructed around the ____________. Sample mean Population mean z test statistic t test statistic
A confidence interval for the population mean is an interval constructed around the A) sample mean B) population mean C) z test statistic D) test statistic