« previous next »

Author Question: The z score for the standard normal distribution a. is always equal to zero. b. can never be ... (Read 88 times)

amal

  • Hero Member
  • *****
  • Posts: 572
on: Jun 24, 2018
The z score for the standard normal distribution
 a. is always equal to zero.
   b. can never be negative.
   c. can be either negative or positive.
   d. is always equal to the mean.

Question 2

A sample of 22 bottles of soft drink showed a variance of .64 in their contents. At the 5 level, determine whether or not the standard deviation of the population is significantly different from .7 ounces. Use the critical value approach.


leannegxo

  • Sr. Member
  • ****
  • Posts: 374
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

H0: 2 = .49
Ha: 2  .49
chi-square = 27.43 which is between 10.283 to 35.479; do not reject H0


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

amal

  • Hero Member
  • *****
  • Posts: 572
Reply #2 on: Jun 24, 2018
Thank you


leannegxo

  • Sr. Member
  • ****
  • Posts: 374
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
p53 (normal cell vs tumor cell) p53 (normal cell vs tumor cell)
If the needle drops 1 or 2 inches Hg from the normal reading, one of the engine valves is burned or ... If the needle drops 1 or 2 inches Hg from the normal reading, one of the engine valves is burned or ...
The Distribution of Pressure The Distribution of Pressure
Distribution and Forms of Precipitation: Graupel and Hail Distribution and Forms of Precipitation: Graupel and Hail
Average Distribution of Incoming Solar Radiation Average Distribution of Incoming Solar Radiation
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library