« previous next »

Author Question: Confirmed cases of West Nile virus in birds for a sample of six counties in the state of Georgia are ... (Read 67 times)

tingc95

  • Hero Member
  • *****
  • Posts: 556
on: Jun 24, 2018
Confirmed cases of West Nile virus in birds for a sample of six counties in the state of Georgia are shown below. County Cases Catoosa 6 Chattooga 3 Dade 3 Gordon 5 Murray 3 Walker 4 We are interested in testing the following hypotheses regarding these data: H0:   3 Ha:  > 3
 a. Compute the mean and the standard deviation of the sample.
  b. Compute the standard error of the mean.
  c. Determine the test statistic.
  d. Determine the p-value and at 95 confidence, test the hypotheses.

Question 2

You are given the following information obtained from a random sample of 4 observations. 25 47 32 56 You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 48 . (Assume the population is normally distributed.)
 a. State the null and the alternative hypotheses.
  b. Determine the test statistic.
  c. Determine the p-value; and at 95 confidence test to determine whether or not the mean of the population is significantly different from 48.


cdmart10

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 4 and 1.265 (rounded)
b. 0.5164
c. t = 1.94 (rounded)
d. p-value is between 0.05 and 0.1; reject H0 and conclude that the mean of the population is significantly more than 3.

Answer to Question 2

a. H0:  = 48
Ha:   48
b. t = -1.137
c. p-value is between 0.2 and 0.4 (two tailed); do not reject H0.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Iowa State University's Tornado/Microburst Simulator Iowa State University's Tornado/Microburst Simulator
Human immunodeficiency virus (HIV) Human immunodeficiency virus (HIV)
An activation barrier, representing the transition state An activation barrier, representing the transition state
Sample Student Externship Form Sample Student Externship Form
Reconstruction Drawing Of The Citadel At Mycenae At Its Most Developed State Reconstruction Drawing Of The Citadel At Mycenae At Its Most Developed State
Sketch the graph of each function using transformations. State the domain and range. Sketch the graph of each function using transformations. State the domain and range.
Video: A Human Karyotype Preparation Animation

For a complete list of videos, visit our video library