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

Author Question: The SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is ... (Read 288 times)

ericka1

  • Hero Member
  • *****
  • Posts: 544
on: Jun 24, 2018
The 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?

Question 2

All of the following variable selection procedures are heuristics except
 a. forward selection.
 b. backward elimination.
 c. best-subsets regression.
  d. stepwise regression.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

perkiness

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 0.0082
b. 0.9986
c. 0.4192
d. 0.5
e. 1.0

Answer to Question 2

c


ericka1

  • Member
  • Posts: 544
Reply 2 on: Jun 24, 2018
Wow, this really help

blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Enamel defects due to malnutrition in a child from the Illinois valley (A.D. 600-1200). Enamel defects due to malnutrition in a child from the Illinois valley (A.D. 600-1200).
Iowa Gambling Task Scores Across Age Iowa Gambling Task Scores Across Age
Standard Laboratory Lipid Profiles Standard Laboratory Lipid Profiles
a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments. a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments.
How to quickly determine the maximum or minimum value of a quadratic equation in standard form How to quickly determine the maximum or minimum value of a quadratic equation in standard form
A 2.000 g sample of water contains 11.19% H by mass and 88.81% O by mass. What mass of H will ... A 2.000 g sample of water contains 11.19% H by mass and 88.81% O by mass. What mass of H will ...
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library