« 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 35 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?

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.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Urinary tract infection. A UTI is characterized by fever, lumbar or abdominal pain, and pain or burn Urinary tract infection. A UTI is characterized by fever, lumbar or abdominal pain, and pain or burn
Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S
A typical fire extinguisher designed to be used on class A, B, or C fires. A typical fire extinguisher designed to be used on class A, B, or C fires.
Schematic representation of MHC class II molecule, consisting of 2 α-domains and 2 β-domains, the ... Schematic representation of MHC class II molecule, consisting of 2 α-domains and 2 β-domains, the ...
Another class of dihydrofolate reductase inhibitors is exemplified by trimethoprim Another class of dihydrofolate reductase inhibitors is exemplified by trimethoprim
Lumbar Spine Exam Reminder Lumbar Spine Exam Reminder
Video: Structures that affect circulation - heart and MABP

For a complete list of videos, visit our video library