Homework Help is Here – Start Your Trial Now!
Math
Probability
(a) (i)A survey found that one out of five Americans say he or she has visited a doctor in any given month. If 10 people are selected at random, find the binomial probability that exactly 4 will have visited a doctor last month. (ii) A sales firm receives, on average, 4 calls per hour on its toll-free number. For any given hour, find the probability that it will receive less than equal 3 calls. (b) Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find these probabilities. (i). The student makes more than $14,000. (ii). The student makes between $13,000 and $15,000.

(a) (i)A survey found that one out of five Americans say he or she has visited a doctor in any given month. If 10 people are selected at random, find the binomial probability that exactly 4 will have visited a doctor last month. (ii) A sales firm receives, on average, 4 calls per hour on its toll-free number. For any given hour, find the probability that it will receive less than equal 3 calls. (b) Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find these probabilities. (i). The student makes more than $14,000. (ii). The student makes between $13,000 and $15,000.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
See similar textbooks
icon
Related questions
Topic Video
Question
(a) (i)A survey found that one out of five Americans say he or she has visited a doctor in any given month. If 10 people are selected at random, find the binomial probability that exactly 4 will have visited a doctor last month. (ii) A sales firm receives, on average, 4 calls per hour on its toll-free number. For any given hour, find the probability that it will receive less than equal 3 calls. (b) Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find these probabilities. (i). The student makes more than $14,000. (ii). The student makes between $13,000 and $15,000.
Transcribed Image Text:(a) (i)A survey found that one out of five Americans say he or she has visited a doctor in any given month. If 10 people are selected at random, find the binomial probability that exactly 4 will have visited a doctor last month. (ii) A sales firm receives, on average, 4 calls per hour on its toll-free number. For any given hour, find the probability that it will receive less than equal 3 calls. (b) Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find these probabilities. (i). The student makes more than $14,000. (ii). The student makes between $13,000 and $15,000.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Discrete Probability Distributions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
College Algebra
College Algebra
Algebra
ISBN:
9781337282291
Author:
Ron Larson
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS