« previous next »

Author Question: SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is ... (Read 161 times)

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
on: Jun 24, 2018
SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is selected.
 a. What is the probability that the sample mean will be larger than 1224?
  b. What is the probability that the sample mean will be less than 1230?
  c. What is the probability that the sample mean will be between 1200 and 1214?
  d. What is the probability that the sample mean will be greater than 1200?
  e. What is the probability that the sample mean will be larger than 73.46?

Question 2

In a standard normal distribution, the range of values of z is from _____.
 a. minus infinity to infinity
  b. 1 to 1
  c. 0 to 1
  d. 3.09 to 3.09


kxciann

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0082
b. .9986
c. .4192
d. .5
e. 1.0

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
Reply #2 on: Jun 24, 2018
Thank you :)


kxciann

  • Sr. Member
  • ****
  • Posts: 356
Reply #3 on: Jun 24, 2018
Happy to help you


« previous next »
 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Population genetics sample question Population genetics sample question
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
Sample Exercise Prescription for Weight Training: Advanced Sample Exercise Prescription for Weight Training: Advanced
Calculating the Deviation IQ Score Calculating the Deviation IQ Score
How to fully analyze the standard and factored form of a quadratic equation (Question 1) How to fully analyze the standard and factored form of a quadratic equation (Question 1)
Children's behaviour rating scores on measures of aggression and anxiety Children's behaviour rating scores on measures of aggression and anxiety
Video: Parathyroid hormone (bone resorption) & Calcitonin (bone deposition)

For a complete list of videos, visit our video library