« previous next »

Author Question: Find the standard z-score such that 80 of the distribution is to the left of this ... (Read 64 times)

beccaep

  • Hero Member
  • *****
  • Posts: 535
on: Jul 24, 2018
Find the standard z-score such that 80 of the distribution is to the left of this value.

Question 2

Find the area under the standard normal curve between z = 0.25 and z = 2.75.


shaikhs

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Jul 24, 2018
Answer to Question 1

z = 0.84

Answer to Question 2

P(0.25 < z < 2.75) = 0.4970  0.0897 = 0.4073


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

beccaep

  • Hero Member
  • *****
  • Posts: 535
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


shaikhs

  • Sr. Member
  • ****
  • Posts: 312
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Skin of an African (left) and Asian (right) elephant. Skin of an African (left) and Asian (right) elephant.
The original Magdeburg hemispheres (lower left) used to demonstrate Otto von Guericke's vacuum The original Magdeburg hemispheres (lower left) used to demonstrate Otto von Guericke's vacuum
Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s
How to use L'Hospital's Rule to find the limit of a function (Part 2) How to use L'Hospital's Rule to find the limit of a function (Part 2)
How to find the equation of a line passing through two points How to find the equation of a line passing through two points
APGAR SCORE APGAR SCORE
Video: Uterine (menstrual) cycle - phases

For a complete list of videos, visit our video library