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

Author Question: Which of the following statements about a discrete random variable and its probability distribution ... (Read 124 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jun 24, 2018
Which of the following statements about a discrete random variable and its probability distribution is true?
 a. Values of the random variable can never be negative.
  b. Negative values of f(x) are allowed if f(x) = 1.
  c. Values of f(x) must be greater than or equal to zero.
  d. The values of f(x) increase to a maximum point and then decrease.

Question 2

Some people who bought X-Game gaming systems complained about having received defective systems. The industry standard for such gaming systems has been 98 non-defective systems. In a sample of 120 units sold, 6 units were defective.
 a. Compute the proportion of defective items in the sample.
  b. Compute the standard error of .
  c. At a 5 level of significance using the critical value approach, test to see if the percentage of defective systems produced by X-Game has exceeded the industry standard.
  d. Show that the p-value approach results in the same conclusion as that of part b.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

a. .05
b. .0128
c. Test statistic z = 2.35 > 1.645; reject H0; the number of defects has exceeded the industry standard.
d. p-value (.0094) < .05; reject H0.


jace

  • Member
  • Posts: 541
Reply 2 on: Jun 24, 2018
Gracias!

triiciiaa

  • Member
  • Posts: 349
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

World Distribution of Temperature World Distribution of Temperature
How to calculate theoretical probability How to calculate theoretical probability
Distribution of Earth's Water Distribution of Earth's Water
Distribution of dystrophin in muscle cells. (a) In normal muscle cells, all the dystrophin is locate Distribution of dystrophin in muscle cells. (a) In normal muscle cells, all the dystrophin is locate
Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are
Separation of variable number tandem repeat (VNTR) alleles after PCR amplification Separation of variable number tandem repeat (VNTR) alleles after PCR amplification
Video: Calvin Cycle Explained!

For a complete list of videos, visit our video library