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 120 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?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Drug classes used in the pharmacotherapy of asthma. Drug classes used in the pharmacotherapy of asthma.
Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ... Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ...
Types of Drug Interactions Types of Drug Interactions
Ophthalmic drug administration Ophthalmic drug administration
The Drug Development Process The Drug Development Process
ECG machine ECG machine
Video: Cardiac Cycle (Part 1 of 4)

For a complete list of videos, visit our video library