Question

signment Submission & Scoring signment Submission this assignment, you submit the entire assignment signment Scoring ur last submission is used for your score. 1. -/14 points My Notes The ideal (daytime) noise-level for hospitals is 45 decibels with a standard deviation of db, which is to say this may not be true. A simple random sample of hospitals at a moment during the day gives a mean noise level of 47 db. Assume that the standard deviation of noise level for a hospitals is really db. All answers to two places after the decimal (a) A 99% confidence interval for the actual mean noise level in hospitals is db, (b) We can be 90% confident that the actual mean noise level in hospitals is db with a margin of error of c) Unless our sample of 81 hospitals) is among the most unusual 2% of samples, the actual mean noise level in hospitals is between db and (d) A 99.9% confidence interval for the actual mean noise level in hospitals is db) (e) Assuming our sample of hospitals is among the most typical hall of such samples, the actual mean noise level in hospitals is between () We are 95% confident that the actual mean noise level in hospital is ob, with a margin of error of (a) How many hospitals must we examine to have confidence that we have the margin of error to within 1 db2002 (h) How many hospitals must we examine to have 99.99% confidence that we have the margin of error to within 1 db? dband F10

Answer 1

as per HOMEWORKLIB RULES we have to slove minimum 4 sub parts ...please rate if it is helpfull