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

Author Question: The empirical rule states that, for data having a bell-shaped distribution, the portion of data ... (Read 64 times)

j.rubin

  • Hero Member
  • *****
  • Posts: 557
on: Jun 24, 2018
The empirical rule states that, for data having a bell-shaped distribution, the portion of data values being within one standard deviation of the mean is approximately _____.
 a. 33
  b. 50
  c. 68
  d. 95

Question 2

A bank has kept records of the checking balances of its customers and determined that the average daily balance of its customers is 300 with a standard deviation of 48 . A random sample of 144 checking accounts is selected.
 a. What is the probability that the sample mean will be more than 306.60?
  b. What is the probability that the sample mean will be less than 308?
  c. What is the probability that the sample mean will be between 302 and 308?
  d. What is the probability that the sample mean will be at least 296?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

softEldritch

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

a. 0.0495
b. 0.9772
c. 0.2857
d. 0.8413


j.rubin

  • Member
  • Posts: 557
Reply 2 on: Jun 24, 2018
Excellent

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Gracias!

« previous next »
 

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?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of
The United States, 1819 The United States, 1819
Wedge-shaped oil film developed below a moving block. Wedge-shaped oil film developed below a moving block.
How the Distribution of Education Affects the Distribution of Income How the Distribution of Education Affects the Distribution of Income
Which of the following molecules are exceptions the octet rule? Which of the following molecules are exceptions the octet rule?
Distribution of coral reefs Distribution of coral reefs
Video: Five phases of cardiac cycle & Atrial contraction

For a complete list of videos, visit our video library