« previous next »

Author Question: For a standard normal distribution, determine the probability of obtaining a Z value of a. greater ... (Read 76 times)

codyclark

  • Hero Member
  • *****
  • Posts: 538
on: Jun 24, 2018
For a standard normal distribution, determine the probability of obtaining a Z value of
 a. greater than zero.
  b. between -2.34 to -2.55
  c. less than 1.86.
  d. between -1.95 to 2.7.
  e. between 1.5 to 2.75.

Question 2

The time it takes a worker on an assembly line to complete a task is exponentially distributed with a mean of 8 minutes.
 a. What is the probability density function for the time it takes to complete the task?
  b. What is the probability that it will take a worker less than 4 minutes to complete the task?
  c. What is the probability that it will take a worker between 6 and 10 minutes to complete the task?


shailee

  • Sr. Member
  • ****
  • Posts: 392
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 0.5000
b. 0.0042
c. 0.9686
d. 0.9709
e. 0.0638

Answer to Question 2

a. f(x) =(1/8 ) e-x/8 for x > 0
b. 0.3935
c. 0.1859


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Greater Flamingo Greater Flamingo
An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified. An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified.
Normal changes in the breast during a woman's life span Normal changes in the breast during a woman's life span
The typical distribution of neurofibrillary tangles and amyloid plaques in the brains of patients ... The typical distribution of neurofibrillary tangles and amyloid plaques in the brains of patients ...
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
Section of a normal brain (left) and an HD brain (right). The HD brain shows extensive damage to the Section of a normal brain (left) and an HD brain (right). The HD brain shows extensive damage to the
Video: Medullary osmotic gradient: countercurrent multiplier, urea recycling & vasa recta countercurrent exchange

For a complete list of videos, visit our video library