Author Question: For a continuous random variable x, the height of the function at x is a. the probability at a ... (Read 78 times)

809779

  • Hero Member
  • *****
  • Posts: 579
For a continuous random variable x, the height of the function at x is
 a. the probability at a given value of x.
   b. 0.50, since it is the middle value.
   c. a value less than zero.
   d. named the probability density function f(x).

Question 2

It is crucial that the variance (measured in min2) of a production process be less than or equal to 25 . A sample of 22 is taken. The sample variance equaled 26.
 a. Construct a 90 confidence interval for the population variance.
  b. Construct a 90 confidence interval for the population standard deviation.
  c. State the null and alternative hypotheses to be tested.
  d. Compute the test statistic.
  e. The null hypothesis is to be tested at the 10 level of significance. Using the critical value approach, state the decision rule for the test.
  f. What do you conclude about the population variance?



tennis14576

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

d

Answer to Question 2

a. 16.712 to 47.106
b. 4.088 to 6.863
c. H0: 2  25
Ha: 2 > 25
d. 21.84
e. Reject H0 if chi-square  29.615
f. Do not reject H0; no evidence to conclude that the population variance of the production process is more than 25.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

For a complete list of videos, visit our video library