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 118 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
Great answer, keep it coming :)

cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Diving bell spider (Argyroneta aquatica) Diving bell spider (Argyroneta aquatica)
Ebola Virus Geographic Distribution Ebola Virus Geographic Distribution
The Distribution of Dominant and Minority Groups The Distribution of Dominant and Minority Groups
Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children). Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children).
How to fit an exponential model to data How to fit an exponential model to data
Total Fertility Rate in the United States, 1860–2008 Total Fertility Rate in the United States, 1860–2008
Video: Nervous pathway to the Neuromuscular (NMJ)

For a complete list of videos, visit our video library