Author Question: For a continuous random variable x, the height of the function at x is a. the probability at a ... (Read 77 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?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

For a complete list of videos, visit our video library