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

Author Question: The manager of a bank recorded the amount of time each customer spent waiting in line during peak ... (Read 191 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
on: Jul 25, 2018
The manager of a bank recorded the amount of time each customer spent waiting in line during
  peak business hours one Monday. The frequency table below summarizes the results.
 
  Waiting Time
  (minutes)
  Number of
  Customers
  0-3 9
  4-7 10
  8-11 12
  12-15 4
  16-19 4
  20-23 2
  24-27 2
  If we randomly select one of the customers represented in the table, what is the probability that the
  waiting time is at least 12 minutes or between 8 and 15 minutes?
  A) 0.558 B) 0.651 C) 0.093 D) 0.727

Question 2

A die is rolled 9 times and the number of times that two shows on the upper face is counted. If this
  experiment is repeated many times, find the mean for the number of twos.
 
  A) 7.5 B) 1.5 C) 2.25 D) 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

B


londonang

  • Hero Member
  • *****
  • Posts: 540
Reply #2 on: Jul 25, 2018
Both answers were spot on, thank you once again


owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 25, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

If you want to show differences between items at the same time, a bar graph is more effective than a If you want to show differences between items at the same time, a bar graph is more effective than a
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
Operation of a typical pulse generator (pickup coil). At the bottom is a line drawing of a typical ... Operation of a typical pulse generator (pickup coil). At the bottom is a line drawing of a typical ...
Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ... Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ...
Calculate the amount of interest that will be charged on $9000.00 borrowed for four months at ... Calculate the amount of interest that will be charged on $9000.00 borrowed for four months at ...
A mother invests $9000 in a bank account at the time of her daughter's birth. The interest is ... A mother invests $9000 in a bank account at the time of her daughter's birth. The interest is ...
Video: Role of the respiratory system - effect of altered ventilation rates

For a complete list of videos, visit our video library