Question

An overnight delivery service has a promotional discount rate in effect this week only. Twelve packages mailed this week were randomly selected to see if there is evidence that the mean weight of packages sent this week is higher than usual. A 95% confidence interval for μ was found to be (10.64, 13.08), using the context of the problem, give an interpretation of the interval. 1. 2. In a survey about fears, 45 out of 250 randomly selected adults said that they were afraid of the dentist's chair, Based on this sample data, a 95% confidence interval for the population proportion was found to be (0.136, 0.228) Using the context of the problem, give an interpretation of the confidence interval.

Answer 1

Answer :

The interpretation of the confidence interval is as may following are,

(1). we are 95% certain to reason that the genuine population mean load of bundles sent for the current week is lies between the interim

( 10.64,03.08 )

(2). we are 95% certain to presume that the genuine population extent of grown-ups who said that they fear the dental practitioner seat is lies between the interim

( 0.136,0.228 )