4) a. A group of hospitals identified that they receive an average of (B + A) Covid-patients per day. Assume the standard deviation is 10. A random sample of 49 days was chosen. Find the 95% confidence interval. b. A study of (10 + A) students discovered the 8 years as standard deviation of their ages. Suppose the variable is normally distributed. Find 90% confidence interval for the variance. A=20 B=0716

4) a. A group of hospitals identified that they receive an average of (B + A) Covid-patients per day. Assume the standard deviation is 10. A random sample of 49 days was chosen. Find the 95% confidence interval. b. A study of (10 + A) students discovered the 8 years as standard deviation of their ages. Suppose the variable is normally distributed. Find 90% confidence interval for the variance. A=20 B=0716

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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