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

Author Question: The probability that a continuous random variable takes any specific value a. is equal to zero. ... (Read 42 times)

Tirant22

  • Hero Member
  • *****
  • Posts: 532
on: Jun 24, 2018
The probability that a continuous random variable takes any specific value
 a. is equal to zero.
   b. is at least 0.5.
   c. depends on the probability density function.
   d. is very close to 1.0.

Question 2

The average score of a sample of 30 students on their second statistics examination was 85 with a standard deviation of 11 . Is the variance of the population significantly more than 80? Use a .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

mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Reply #1 on: Jun 24, 2018
Answer to Question 1

a

Answer to Question 2

H0: 2  80
Ha: 2 > 80
chi-square = 43.86 > 42.557 (p-value is between .025 and .05); reject H0
The population variance is significantly more than 80.


Tirant22

  • Member
  • Posts: 532
Reply 2 on: Jun 24, 2018
Excellent

duy1981999

  • Member
  • Posts: 341
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

A specific human chromosomal landscape A specific human chromosomal landscape
Continuous variation in a natural population Continuous variation in a natural population
Summation of Heart Sounds, Variable S1 Summation of Heart Sounds, Variable S1
Failure of the Equal Rights Amendment, 1972–1982 Failure of the Equal Rights Amendment, 1972–1982
Specific Drugs and their Potential for Dependence Specific Drugs and their Potential for Dependence
An example of the key features of pesticide labels. The EPA requires the inclusion of specific ... An example of the key features of pesticide labels. The EPA requires the inclusion of specific ...
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

For a complete list of videos, visit our video library