**Text Transcription:**Suppose that the duration of a particular type of criminal trial is known to be normally distributed with a mean of 21 days and a standard deviation of 5 days. Let X be the number of days for a randomly selected trial. Round all answers to 4 decimal places where possible.b. If one of the trials is randomly chosen, find the probability that it lasted at least 22 days.[ ]**Explanation:**The problem is about finding the probability of a normally distributed random variable. In this scenario, the duration of a criminal trial is normally distributed with a mean (μ) of 21 days and a standard deviation (σ) of 5 days. The task is to calculate the probability that a randomly selected trial lasts at least 22 days.To solve this, you would typically use the properties of the normal distribution, often involving the calculation of a Z-score and consulting a standard normal distribution table, or using statistical software for precise values. No graphs or diagrams are present in the image.

The random variable number of days follows normal distribution. The population mean is 21. The…

Answered: Suppose that the duration of a…

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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