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

Author Question: In a certain population, body weights are normally distributed with a mean of 152 pounds and a ... (Read 59 times)

biggirl4568

  • Hero Member
  • *****
  • Posts: 551
on: Aug 2, 2018
In a certain population, body weights are normally distributed with a mean of 152 pounds and a standard deviation of 26 pounds.
 
  How many people must be surveyed if we want to estimate the percentage who weigh more than 180 pounds? Assume that we want 96 confidence that the error is no more than 2.5 percentage points.
  A) 591 B) 811 C) 1281 D) 1682

Question 2

A newspaper article about the results of a poll states: In theory, the results of such a poll, in 99 cases out of 100 should differ by no more than 2 percentage points in either direction from what would have been obtained by interviewing all voters
 
  in the United States. Find the sample size suggested by this statement.
  A) 165 B) 2402 C) 3394 D) 4145


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cici

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Aug 2, 2018
Answer to Question 1

How great was that.Thank you so much.

Answer to Question 2

Thanks for sharing, assignments makes me feel like end of world..


biggirl4568

  • Member
  • Posts: 551
Reply 2 on: Aug 2, 2018
Thanks for the timely response, appreciate it

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Body plan of a flatworm. Body plan of a flatworm.
A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya
Write the equation for the population y at any instant Write the equation for the population y at any instant
Population and Settlement Population and Settlement
Working-Age Fraction of the U.S. Population, 1950–2050 Working-Age Fraction of the U.S. Population, 1950–2050
population pyramid of Croatia population pyramid of Croatia
Video: Wound Cultures

For a complete list of videos, visit our video library