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

Author Question: A machine dispenses a liquid drug into bottles in such a way that the standard deviation of the ... (Read 82 times)

Caiter2013

  • Hero Member
  • *****
  • Posts: 607
on: Aug 1, 2018
A machine dispenses a liquid drug into bottles in such a way that the standard deviation of the contents is 81 milliliters.
 
  A new machine is tested on a sample of 24 containers and the standard deviation for this sample group is found to be 26 milliliters. At the 0.05 level of significance, test the claim that the amounts dispensed by the new machine have a smaller standard deviation.

Question 2

The library is to be given 5 books as a gift. The books will be selected from a list of 19 titles. If each book selected must have a different title, how many possible selections are there?
 
  A) 1.216451004e+17 B) 11,628 C) 1.01370917e+15 D) 1,395,360


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

chloejackso

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Aug 1, 2018
Answer to Question 1

Test statistic: X2 = 2.370. Critical value: X2 = 13.091. Reject the null hypothesis. There is sufficient evidence to support the claim that the new machine produces a lower standard deviation.

Answer to Question 2

B


Caiter2013

  • Hero Member
  • *****
  • Posts: 607
Reply #2 on: Aug 1, 2018
Both answers were spot on, thank you once again


chloejackso

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Aug 1, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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?

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.

Documented Herb–Drug Interactions Documented Herb–Drug Interactions
Standard Precautions for the Care of all Patients in All Health Care Settings Standard Precautions for the Care of all Patients in All Health Care Settings
Automated Vial Filling Machine Automated Vial Filling Machine
Routes of Drug Administration: Advantages and Disadvantages Routes of Drug Administration: Advantages and Disadvantages
Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ... Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ...
A buffer solution is prepared using 0.5 moles of a weakly basic drug and an unknown quantity of ... A buffer solution is prepared using 0.5 moles of a weakly basic drug and an unknown quantity of ...
Video: Phases of an Action Potential - Resting Potential, Threshold, Rising, Falling, & Recovery Phases

For a complete list of videos, visit our video library