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

Author Question: A bank has kept records of the checking balances of its customers and determined that the average ... (Read 63 times)

V@ndy87

  • Hero Member
  • *****
  • Posts: 571
on: Jun 24, 2018
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?

Question 2

For a standard normal distribution, a negative value of z indicates _____.
 a. a mistake has been made in computations, because z is always positive
  b. the area corresponding to the z is negative
  c. the z is to the left of the mean
  d. the z is to the right of the mean


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bfulkerson77

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0495
b. .9772
c. .2857
d. .8413

Answer to Question 2

c


V@ndy87

  • Member
  • Posts: 571
Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Bank Bank
Average optimal blood pressure for age Average optimal blood pressure for age
Example of Reconciling a Bank Statement Example of Reconciling a Bank Statement
Checking the terminating resistors using an ohmmeter at the DLC. Checking the terminating resistors using an ohmmeter at the DLC.
Total allowable and actual catch, Grand Bank Atlantic Cod 1959 -2012 Total allowable and actual catch, Grand Bank Atlantic Cod 1959 -2012
Average Annual Growth Rates of Population by Country Group Average Annual Growth Rates of Population by Country Group
Video: Bone tissue types - compact and spongy

For a complete list of videos, visit our video library