« previous next »

Author Question: We intend to estimate the average driving time of a group of commuters. From a previous study, we ... (Read 85 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jul 24, 2018
We intend to estimate the average driving time of a group of commuters. From a previous study, we believe that the average time is 42 minutes with a standard deviation of 7 minutes.
 
  We want our 90 percent confidence interval to have a margin of error of no more than plus or minus 4 minutes. What is the smallest sample size that we should consider?
  A) 2 B) 9 C) 34 D) 3

Question 2

Consider a completely randomized design with five treatments. How many pairwise comparisons of treatments are made in a Bonferroni analysis?
 
  A) 5 B) 20 C) 10 D) 5 = 120


succesfull

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Time dependence of the rates of a chemical reaction Time dependence of the rates of a chemical reaction
The Geologic Time Scale The Geologic Time Scale
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
Comparison of group II self-splicing introns and the spliceosome Comparison of group II self-splicing introns and the spliceosome
Average Years of Schooling versus GDP per Capita Average Years of Schooling versus GDP per Capita
Study of human diseases Study of human diseases
Video: Carbon fixing adaptations Animation

For a complete list of videos, visit our video library