This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In a restaurant, the proportion of people who order coffee with their dinner is .9 . A simple random ... (Read 87 times)

mcmcdaniel

  • Hero Member
  • *****
  • Posts: 550
on: Jun 24, 2018
In a restaurant, the proportion of people who order coffee with their dinner is .9 . A simple random sample of 144 patrons of the restaurant is taken.
 a. What are the expected value, standard deviation, and shape of the sampling distribution of ?
  b. What is the random variable in this problem? Define it in words.
  c. What is the probability that the proportion of people who will order coffee with their meal is between .85 and .875?
 d. What is the probability that the proportion of people who will order coffee with their meal is at least .945?

Question 2

Given that z is a standard normal random variable, what is the value of z if the area to the right of z is .1112?
 a. .3888
  b. 1.22
  c. 2.22
  d. 3.22


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .9; .025; normal
b. p the sample proportion of people who order coffee with their dinners out of 144 patrons
c. .1359
d. .0359

Answer to Question 2

b


mcmcdaniel

  • Member
  • Posts: 550
Reply 2 on: Jun 24, 2018
Excellent

xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

A simple motif, the β-α-β loop A simple motif, the β-α-β loop
Prokaryotic cells are have a relatively simple structure Prokaryotic cells are have a relatively simple structure
U.S. Study on Identity Achievement With age, more young people are classified in identity achieveme U.S. Study on Identity Achievement With age, more young people are classified in identity achieveme
Where do you think these people fit in Gans’ classification of urban dwellers? Where do you think these people fit in Gans’ classification of urban dwellers?
The social movement that centers on the environment has become global. In all nations, people are ... The social movement that centers on the environment has become global. In all nations, people are ...
How to solve simple percent word problems (Part 1) How to solve simple percent word problems (Part 1)
Video: Role of the respiratory system - effect of altered ventilation rates

For a complete list of videos, visit our video library