« previous next »

Author Question: We know that 25 of the class got an A on the last exam, and 30 got a B. What percent got either an A ... (Read 34 times)

dbose

  • Hero Member
  • *****
  • Posts: 597
on: Jun 20, 2018
We know that 25 of the class got an A on the last exam, and 30 got a B. What percent got either an A or a B?
 
  a. 25 30 = 7.5
  b. 25 + 30  = 55
  c. 45
  d. We cannot tell from the information that is presented.

Question 2

We care a great deal about areas under the normal distribution because
 
  a. they translate directly to expected proportions.
  b. they are additive.
  c. they allow us to calculate probabilities of categories of outcomes.
  d. all of the above


JaynaD87

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

For linked genes, recombinant frequencies are less than 50 percent For linked genes, recombinant frequencies are less than 50 percent
Karl Marx (1818–1883) believed that the roots of human misery lay in class conflict, the ... Karl Marx (1818–1883) believed that the roots of human misery lay in class conflict, the ...
Percent of Mothers in the Workforce by Age of Children and Marital Status Percent of Mothers in the Workforce by Age of Children and Marital Status
Sociologists disagree about the relative significance of race and social class in determining social ... Sociologists disagree about the relative significance of race and social class in determining social ...
Student Raises Hand in Class Student Raises Hand in Class
Hands-on class in a massage therapy program. Hands-on class in a massage therapy program.
Video: Congenital Heart Defects Animation

For a complete list of videos, visit our video library