« previous next »

Author Question: The time between customer arrivals at a furniture store has an approximate exponential distribution ... (Read 143 times)

BRWH

  • Hero Member
  • *****
  • Posts: 553
on: Jun 24, 2018
The time between customer arrivals at a furniture store has an approximate exponential distribution with mean  = 8.5 minutes. If a customer just arrived, find the probability that the next customer will not arrive for at least 20 minutes.
 
  A) 0.904911 B) 0.346230 C) 0.095089 D) 0.653770

Question 2

Use the standard normal distribution to find P(-2.50 < z < 1.50).
 
  A) .8822 B) .5496 C) .6167 D) .9270


alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

BRWH

  • Hero Member
  • *****
  • Posts: 553
Reply #2 on: Jun 24, 2018
Thank you


alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Changes in Earth's atmospheric carbon dioxide levels over geological time. Changes in Earth's atmospheric carbon dioxide levels over geological time.
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Covering the interior as soon as the vehicle comes in for service helps improve customer ... Covering the interior as soon as the vehicle comes in for service helps improve customer ...
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 ...
Time spent on, paid work and housework, by living arrangements of Canadian Time spent on, paid work and housework, by living arrangements of Canadian
Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are
Video: Nucleic acid digestion -small intestine

For a complete list of videos, visit our video library