« previous next »

Author Question: The proportion of Americans who support the death penalty is .53 . A sample of 1000 randomly ... (Read 43 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
on: Jun 24, 2018
The proportion of Americans who support the death penalty is .53 . A sample of 1000 randomly selected Americans is surveyed by telephone interview. Use Excel to answer the following questions:
 a. What is the probability that the sample proportion of those supporting the death penalty will be less than .50?
 b. What is the probability that the sample proportion of those supporting the death penalty will be at least .55?
 c. What is the probability that the sample proportion of those supporting the death penalty will be between .50 and .55?
 d. For samples of size 1000, 15 of all sample proportions are at most what value?

Question 2

Given that z is a standard normal random variable, what is the value of z if the area to the left of z is .9382?
 a. 1.8
  b. 1.54
  c. 2.1
  d. 1.77


ErinKing

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .028
=NORM.DIST(0.5,0.53,0.0157,TRUE)
b. .101
=1-NORM.DIST(0.55,0.53,0.0157,TRUE)
c. .871
=NORM.DIST(0.55,0.53,0.0157,TRUE)  NORM.DIST(0.5,0.53,0.0157,TRUE)
d. .514
=NORM.INV(0.15,0.53,0.0157)

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

In 2006 an Iraqi tribunal convicted Saddam Hussein of murdering his own people and sentenced him to In 2006 an Iraqi tribunal convicted Saddam Hussein of murdering his own people and sentenced him to
Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp
Sample Workout in the Target Heart Rate Range Sample Workout in the Target Heart Rate Range
(a) A turbidometry detector measures laser light directly across from the light source. The sample, ... (a) A turbidometry detector measures laser light directly across from the light source. The sample, ...
Soils support plant growth through ion exchange Soils support plant growth through ion exchange
A sample of work by a Grade 4 student with a specific learning disorder A sample of work by a Grade 4 student with a specific learning disorder
Video: Pores and Ion Channels

For a complete list of videos, visit our video library