This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A simple random sample of 64 observations was taken from a large population. The population standard ... (Read 130 times)

Lisaclaire

  • Hero Member
  • *****
  • Posts: 569
on: Jun 24, 2018
A simple random sample of 64 observations was taken from a large population. The population standard deviation is 120 . The sample mean was determined to be 320 . The standard error of the mean is _____.
 a. 1.875
  b. 40
  c. 5
  d. 15

Question 2

Twenty-five percent of the employees of a large company are minorities. A random sample of 7 employees is selected.
 a. Define the random variable in words for this experiment.
  b. What is the probability that the sample contains exactly 4 minorities?
  c. What is the probability that the sample contains fewer than 2 minorities?
  d. What is the probability that the sample contains exactly 1 non-minority?
  e. What is the expected number of minorities in the sample?
  f. What is the variance of the minorities?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

epscape

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

a. x = the number of minority employees out of 7 or
y = the number of non-minority employees out of 7
b. .0577
c. .4449
d. .0013
e. 1.75
f. 1.3125


Lisaclaire

  • Member
  • Posts: 569
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

Dominic

  • Member
  • Posts: 328
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

(A) Closed (or simple) fracture and (B) open (or compound) fracture. (A) Closed (or simple) fracture and (B) open (or compound) fracture.
Standard Model of Elementary Particles Standard Model of Elementary Particles
The digestive system: functions of the small intestine and large intestine (colon) The digestive system: functions of the small intestine and large intestine (colon)
Sample Student Externship Form Sample Student Externship Form
Anatomy of the Large Intestine By the time chyme reaches the large intestine, most of its nutrients Anatomy of the Large Intestine By the time chyme reaches the large intestine, most of its nutrients
Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

For a complete list of videos, visit our video library