« previous next »

Author Question: A z-score of 1.28 corresponds to approximately what percentile of the standard normal ... (Read 57 times)

Bernana

  • Hero Member
  • *****
  • Posts: 530
on: Jul 24, 2018
A z-score of 1.28 corresponds to approximately what percentile of the standard normal distribution?

Question 2

Suppose that A and B are mutually exclusive events, and that P(A) = 0.4 and P(B) = 0.3 . Then, P(A and B) will be
 a. 0.0
  b. 0.4
  c. 0.3
  d. 0.7


katheyjon

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 24, 2018
Answer to Question 1

90th percentile

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Hydronephrosis. Normal kidney (left) and kidney with hydronephrosis (right) are compared. Note the d Hydronephrosis. Normal kidney (left) and kidney with hydronephrosis (right) are compared. Note the d
PET scan of a normal brain. PET scan of a normal brain.
Pressure drop after 10 minutes on a normal port fuel-injection system. Pressure drop after 10 minutes on a normal port fuel-injection system.
Diagram of the heart showing normal conduction pathway. Diagram of the heart showing normal conduction pathway.
Normal and thermal inversion air masses interaction Normal and thermal inversion air masses interaction
Normal frequency distribution, characterized by a bell-shaped curve Normal frequency distribution, characterized by a bell-shaped curve
Video: Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library