« previous next »

Author Question: A population has a mean of 180 and a standard deviation of 24 . A sample of 64 observations will be ... (Read 187 times)

naturalchemist

  • Hero Member
  • *****
  • Posts: 542
on: Jun 24, 2018
A population has a mean of 180 and a standard deviation of 24 . A sample of 64 observations will be taken. The probability that the mean from that sample will be between 183 and 186 is _____.
 a. 0.1359
  b. 0.8185
  c. 0.3413
  d. 0.4772

Question 2

The number of customers at Winkies Donuts between 8:00 A.M. and 9:00 A.M. is believed to follow a Poisson distribution with a mean of 2 customers per minute.
 a. During a randomly selected one-minute interval during this time frame, what is the probability of 6 customers arriving to Winkies?
  b. What is the probability at least 2 minutes elapse between customer arrivals?


aprice35067

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 24, 2018
Answer to Question 1

a

Answer to Question 2

a. .0120
b. .0183


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater, Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ... Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ...
Sample Exercise Program for Limited Older Adults Sample Exercise Program for Limited Older Adults
Standard Precautions for the Care of all Patients in All Health Care Settings Standard Precautions for the Care of all Patients in All Health Care Settings
a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments. a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments.
Policies on fertility and population growth Policies on fertility and population growth
Video: Nucleic acid digestion - brush border enzymes, end products & transport mechanism

For a complete list of videos, visit our video library