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

Author Question: Two thousand numbers are selected randomly; 960 are even numbers. a. State the hypotheses to ... (Read 171 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Aug 1, 2018
Two thousand numbers are selected randomly; 960 are even numbers.
 a. State the hypotheses to determine whether the proportion of odd numbers is significantly different from 50.
  b. Compute the test statistic.
  c. At the .10 level of significance using the p-value approach, test the hypotheses.

Question 2

A law enforcement agent believes that at least 88 of the drivers stopped for speeding on Saturday nights are under the influence of alcohol. A sample of 66 drivers who were stopped for speeding on a Saturday night was taken. Eighty percent of the drivers in the sample were under the influence of alcohol.
 a. State the null and alternative hypotheses.
  b. Compute the test statistic.
  c. Using the p-value approach, test the hypotheses at the .05 level of significance.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cloudre37

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

a . H0: p = .5
Ha: p  .5
b. z = 1.79
c. p-value = .0734 < .10; reject H0

Answer to Question 2

a . H0: p .88
Ha: p < .88
b. z = -2
c. p-value = .0228 < .05; reject H0


ss2343

  • Member
  • Posts: 548
Reply 2 on: Aug 1, 2018
:D TYSM

smrtceo

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Events of the postabsorptive state. Events of the postabsorptive state.
Changes in metabolic rate of selected structures in a mammal's body during different activities Changes in metabolic rate of selected structures in a mammal's body during different activities
Some ion pairs that stabilize the T state of deoxyhemoglobin Some ion pairs that stabilize the T state of deoxyhemoglobin
Selected Miscellaneous Antibacterials Selected Miscellaneous Antibacterials
Selected Monoclonal Antibodies for Immunosuppression Selected Monoclonal Antibodies for Immunosuppression
Selected Drugs for Inflammatory Bowel Disease and Irritable Bowel Syndrome Selected Drugs for Inflammatory Bowel Disease and Irritable Bowel Syndrome
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library