« previous next »

Author Question: A college dorm obtains a sample of its residents by randomly selecting 5 of the 20 floors and ... (Read 76 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
on: Aug 2, 2018
A college dorm obtains a sample of its residents by randomly selecting 5 of the 20 floors and interviewing all students living on those 5 floors.
 
  A) Yes B) No

Question 2

A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours.
 
  If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 8.1 hours.
  A) 0.8457 B) 0.7285 C) 0.8531 D) 0.9146


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Aug 2, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa
Nurse examining and measuring hematuria sample from client with a UTI Nurse examining and measuring hematuria sample from client with a UTI
Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source: Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source:
Sample prescriptions of antibiotics for dental infections. Sample prescriptions of antibiotics for dental infections.
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
Sample Inclusion for Various s Sample Inclusion for Various s
Video: Sperm Formation

For a complete list of videos, visit our video library