« previous next »

Author Question: From a population of 500 elements, a sample of 225 elements is selected. It is known that the ... (Read 156 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Jun 24, 2018
From a population of 500 elements, a sample of 225 elements is selected. It is known that the variance of the population is 900 . The standard error of the mean is approximately _____.
 a. 1.1022
  b. 2
  c. 30
  d. 1.4847

Question 2

A local university reports that 3 of its students take their general education courses on a pass/fail basis. Assume that 50 students are registered for a general education course.
 a. Define the random variable in words for this experiment.
  b. What is the expected number of students who have registered on a pass/fail basis?
  c. What is the probability that exactly 5 are registered on a pass/fail basis?
  d. What is the probability that more than 3 are registered on a pass/fail basis?
  e. What is the probability that less than 4 are registered on a pass/fail basis?


TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

a. x = the number of student out of 50 who are registered for a general education course
b. 1.5
c. .0131
d. .0628
e. .9372


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Flipper tags have been extensively used in the study of penguin population dynamics. Flipper tags have been extensively used in the study of penguin population dynamics.
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Selected Natural Products Selected Natural Products
The fire triangle and the fire tetrahedron For combustion to occur, three elements must be ... The fire triangle and the fire tetrahedron For combustion to occur, three elements must be ...
The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is ... The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is ...
An archaeological sample contains 0.700 g of lead-206 and 2.144 g of uranium-238. Assume that ... An archaeological sample contains 0.700 g of lead-206 and 2.144 g of uranium-238. Assume that ...
Video: Semidiscontinuous DNA replication

For a complete list of videos, visit our video library