Solution Found!

Mathematical Statistics with Applications | 7th Edition | ISBN: 9780495110811 | Authors: Dennis Wackerly; William Mendenhall; Richard L. Scheaffer
Change Question

According to a survey conducted by the American Bar

Chapter 7, Problem 74E

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 74E

According to a survey conducted by the American Bar Association, 1 in every 410 Americans is a lawyer, but 1 in every 64 residents of Washington, D.C., is a lawyer.

a If you select a random sample of 1500 Americans, what is the approximate probability that the sample contains at least one lawyer?

b If the sample is selected from among the residents of Washington, D.C., what is the approximate probability that the sample contains more than 30 lawyers?

c If you stand on a Washington, D.C., street corner and interview the first 1000 persons who walked by and 30 say that they are lawyers, does this suggest that the density of lawyers passing the corner exceeds the density within the city? Explain.

Questions & Answers

QUESTION:

Problem 74E

According to a survey conducted by the American Bar Association, 1 in every 410 Americans is a lawyer, but 1 in every 64 residents of Washington, D.C., is a lawyer.

a If you select a random sample of 1500 Americans, what is the approximate probability that the sample contains at least one lawyer?

b If the sample is selected from among the residents of Washington, D.C., what is the approximate probability that the sample contains more than 30 lawyers?

c If you stand on a Washington, D.C., street corner and interview the first 1000 persons who walked by and 30 say that they are lawyers, does this suggest that the density of lawyers passing the corner exceeds the density within the city? Explain.

ANSWER:

Step 1 of 7

Given that

According to a survey, 1 in every 410 Americans is a lawyer, but 1 in every 64 residents of Washington is a lawyer.

Add to cart

Study Tools You Might Need

Chapter: 4 Problem: 12E

University Physics 13
Problem 12E A cord is wrapped around the rim of a solid uniform wheel 0.250 m in radius and of mass 9.20 kg. A steady horizontal pull of 40.0 N to the right is exerted on the cord, pulling it off tangentially from the wheel. The wheel is mounted on frictionless b

Chapter: 4 Problem: 15

Elementary Statistics: A Step by Step Approach 7
What is the number of permutations of 6 different objects taken all together? a. 0 c. 36 b. 1 d. 720

Chapter: 17 Problem: 17.28

Organic Chemistry, 9
Hydride reduction (with LiAlH4 or NaBH4) of each of the following ketones has been reported in the chemical literature and gives a mixture of two diastereomeric alcohols in each case. Give the structures of both alcohol products for each ketone. (a) (S)-3-Phenyl-2-butanone (b) 4-tert-Butylcyclohexano

Chapter: 44 Problem: 1

Campbell Biology 10
Unlike an earthworms metanephridia, a mammalian nephron a. is intimately associated with a capillary network. b. functions in both osmoregulation and excretion. c. receives filtrate from blood instead of coelomic fluid. d. has a transport epithelium.

Chapter: 5 Problem: 9

Public Finance: A Contemporary Application of Theory to Policy 11
What is logrolling? Under what conditions is logrolling likely to emerge? How can logrolling prevent the attainment of efficiency?

Chapter: 9 Problem: 1

Urban Economics 8
The city of Medianville has 100 citizens with income ranging from $20,000 to $70,000. The average income is $50,000 and the median income is $60,000. An individuals demand for open space depends only on income, and the indi- vidual demand curve (marginal benefit curve) has a vertical intercept equal

Chapter: 11 Problem: 12

Biological Psychology 12
How does alcohol decrease anxiety? a. By shifting blood flow from the left hemisphere to the right hemisphere b. By increasing glutamate activity in the prefrontal cortex c. By facilitating the effects of GABA on certain receptors d. By inhibiting the reuptake of serotonin

Chapter: 5 Problem: 39

College Physics: Explore and Apply 2
(a) What is the ratio of the gravitational force that Earth exerts on the Sun in the winter and the force that it exerts in the summer? (b) How many correct answers can you give for part (a)? (Hint: Earths orbit is an ellipse with the Sun located at one of the foci of the ellipse. Think about the

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back