This topic contains a solution. Click here to go to the answer

Author Question: It is believed that the median age of college students is 21 years. A sample of 85 college students ... (Read 178 times)

xroflmao

  • Hero Member
  • *****
  • Posts: 515
It is believed that the median age of college students is 21 years. A sample of 85 college students is taken. Thirty of the students were under 21, 45 of the students were over 21, and 10 were 21 years old.
 a. State the null and alternative hypotheses.
  b. Test the null hypothesis at the 1 level of significance.

Question 2

A graphical summary of data that is based on a five-number summary is a _____.
 a. histogram
  b. stem-and-leaf display
  c. scatter diagram
  d. box plot



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ultraflyy23

  • Sr. Member
  • ****
  • Posts: 312
Answer to Question 1

a. H0: Median = 21
Ha: Median  21
b. z = 1.62; p-value = .1052; do not reject the null hypothesis; no evidence that the median age of college students is not 21 years.

Answer to Question 2

d




xroflmao

  • Member
  • Posts: 515
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)


pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Gracias!

 

Did you know?

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

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?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

For a complete list of videos, visit our video library