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

Author Question: From a population that is not normally distributed and whose standard deviation is not known, a ... (Read 106 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jun 24, 2018
From a population that is not normally distributed and whose standard deviation is not known, a sample of 50 items is selected to develop an interval estimate for . Which of the following statements is true?
 a. The standard normal distribution can be used.
  b. The t distribution with 50 degrees of freedom must be used.
  c. The t distribution with 49 degrees of freedom must be used.
  d. The sample size must be increased in order to develop an interval estimate.

Question 2

Excel's NORM.INV function can be used to compute _____.
 a. cumulative probabilities for a standard normal z value
  b. the standard normal z value given a cumulative probability
  c. cumulative probabilities for a normally distributed x value
  d. the normally distributed x value given a cumulative probability


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

d


mpobi80

  • Member
  • Posts: 519
Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

momolu

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Photoidentification and the North Atlantic humpback whale population. Photoidentification and the North Atlantic humpback whale population.
Worldwide Variations in Population and Income Levels Developed countries represent only 18% of the Worldwide Variations in Population and Income Levels Developed countries represent only 18% of the
Population Density versus Economic Growth Population Density versus Economic Growth
Write the following in standard form Write the following in standard form
A hypothesis test is performed to test the claim that a population proportion is greater than ... A hypothesis test is performed to test the claim that a population proportion is greater than ...
Demographic transition model for changes in population growth rates and sizes, correlated with long- Demographic transition model for changes in population growth rates and sizes, correlated with long-
Video: Chemical Equilibrium between N2O4 (colorless gas) and NO2 (brown gas)

For a complete list of videos, visit our video library