Homework Help is Here – Start Your Trial Now!
Math
Probability
A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 11,955 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 11,955 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 11,955 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not? a. The mean number of cases is (Type an integer or decimal rounded to three decimal places as needed.)

A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 11,955 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 11,955 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 11,955 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not? a. The mean number of cases is (Type an integer or decimal rounded to three decimal places as needed.)

A First Course in Probability (10th Edition)
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...
See similar textbooks
icon
Related questions
Question
Please help with all questions.
A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 11,955 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 11,955 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 11,955 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not? a. The mean number of cases is (Type an integer or decimal rounded to three decimal places as needed.)
Transcribed Image Text:A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 11,955 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 11,955 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 11,955 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not? a. The mean number of cases is (Type an integer or decimal rounded to three decimal places as needed.)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer