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

Author Question: Texas passed a law requiring drivers and passengers in the front seat to wear seat belts. In order ... (Read 167 times)

TVarnum

  • Hero Member
  • *****
  • Posts: 548
on: Jun 24, 2018
Texas passed a law requiring drivers and passengers in the front seat to wear seat belts. In order to estimate the compliance with the law an unmarked car will operate in a selected county and the officer will observe whether or not seat belts are in use. The proportion complying, , in the county is to be estimated by randomly selecting the cars to examine. A confidence coefficient of 0.98 is desired with the estimate, p, to be within 0.05 of the true proportion. If an average number of cars passing the observation point per day is 12,000, how many cars are needed in this sample?

Question 2

A proponent of private aid to assist those who are suffering from hunger has decided to take a random sample to estimate the average annual contribution in her community to world hunger relief. A similar study in a comparable community reported the standard deviation of giving as 15 . Our proponent believes that her estimate x should be within 3 of the true average and with 92-percent confidence. If 1222 in this community contribute to world hunger relief, what size sample is appropriate?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 24, 2018
Answer to Question 1

518

Answer to Question 2

73


TVarnum

  • Member
  • Posts: 548
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

kusterl

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Major moons of Uranus in order of increasing distance (left to right), at their proper relative size Major moons of Uranus in order of increasing distance (left to right), at their proper relative size
On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a
Young Bill Clinton (left) shakes hands with President John F. Kennedy. “The torch has been passed ... Young Bill Clinton (left) shakes hands with President John F. Kennedy. “The torch has been passed ...
X-Ray Procedures Requiring Special Preparations X-Ray Procedures Requiring Special Preparations
Explain the assumptions that must be satisfied in order to validly use the one-way ANOVA ... Explain the assumptions that must be satisfied in order to validly use the one-way ANOVA ...
Test of Yanofsky’s Proposed trp Operon Gene Order Test of Yanofsky’s Proposed trp Operon Gene Order
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library