« previous next »

Author Question: From a population of 500 elements, a sample of 225 elements is selected. It is known that the ... (Read 101 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?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Three Population Pyramids Three Population Pyramids
Sample root cause analysis: Duplicate dose of a narcotic analgesic. Sample root cause analysis: Duplicate dose of a narcotic analgesic.
Selected Drugs for Superficial Mycoses Selected Drugs for Superficial Mycoses
Population and Settlement Population and Settlement
Human Population Growth Human Population Growth
Selected Broad Sense Heritability (H2) Values from Human Twin Studies Selected Broad Sense Heritability (H2) Values from Human Twin Studies
Video: Cardiac Cycle (Part 4 of 4)

For a complete list of videos, visit our video library