« previous next »

Author Question: The number of hours a college student spent studying during the final exam week was recorded as ... (Read 162 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
on: Aug 1, 2018
The number of hours a college student spent studying during the final exam week was recorded as follows: 7, 6, 4, 9, 8, 5, and 10 . Compute s2 and s for the data and express the numbers in the appropriate unit.

Question 2

In terms of random variation and assignable variation, what is meant by the statement, The process is in control?


underwood14

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Aug 1, 2018
Answer to Question 1

s2 = 4.667 (hours)2 and s = 2.160 hours

Answer to Question 2

The process is considered to be in control if the variation in the sample statistic is judged to be the result of random variation alone.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

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.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Any number of crossovers gives 50 percent recombinants Any number of crossovers gives 50 percent recombinants
Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source: Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source:
Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f
Xenophon (430–357 B.C.E.) Biographer of Socrates and his student as a youth. In addition to four ... Xenophon (430–357 B.C.E.) Biographer of Socrates and his student as a youth. In addition to four ...
An 8th grade class develops a linear model that predicts the number of cheerios (a small round ... An 8th grade class develops a linear model that predicts the number of cheerios (a small round ...
Answers to a exam biology Answers to a exam biology
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

For a complete list of videos, visit our video library