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

Author Question: A negative value of z indicates that a. the number of standard deviations of an observation is to ... (Read 22 times)

fagboi

  • Hero Member
  • *****
  • Posts: 535
on: Jun 24, 2018
A negative value of z indicates that
 a. the number of standard deviations of an observation is to the right of the mean.
   b. the number of standard deviations of an observation is to the left of the mean.
   c. a mistake has been made in computations, since z cannot be negative.
   d. the data has a negative mean.

Question 2

A sample of 61 items provided a sample mean of 932, a sample mode of 900, and a sample standard deviation of 11 . Test the following hypotheses using  = .05 . What is your conclusion? H0: 2  80 Ha: 2 > 80


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jayson

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

2 = 90.75 > 79.082 (p-value is between .005 and .01); reject H0
The population variance is more than 80.


fagboi

  • Member
  • Posts: 535
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re
Nonverbal communications convey strong, powerful messages that may be negative or positive. Nonverbal communications convey strong, powerful messages that may be negative or positive.
The number of research articles published on the topic of religious practices and spirituality have ... The number of research articles published on the topic of religious practices and spirituality have ...
Determination of the Number of Polygenes (n) Determination of the Number of Polygenes (n)
The effect of disruptive selection on bristle number in Drosophila The effect of disruptive selection on bristle number in Drosophila
Chromosome Number in Selected Animal Species Chromosome Number in Selected Animal Species
Video: Simple Diffusion - Ion transport

For a complete list of videos, visit our video library