Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. a lab is testing the amount of a certain active ch

A lab is testing the amount of a certain active chemical compound in a particular drug...

90.2K

Verified Solution

Question

Statistics

A lab is testing the amount of a certain active chemicalcompound in a particular drug that has been recently developed. Themanufacturer claims that the average amount of the chemical is 110mg. It is known that the standard deviation in the amount of thechemical is 7 mg.

A random sample of 21 batches of the new drug is tested andfound to have a sample mean concentration of 104.5 mg of the activechemical.

a)Calculate the 95% confidence interval for the mean amount ofthe active chemical in the drug. Give your answers to 2 decimalplaces.

≤ μ ≤

b)At a significance level α = 0.05, the null hypothesis that thepopulation mean amount of the active chemical in the drug is 110 mgis

Answer & Explanation Solved by verified expert
4.1 Ratings (437 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Accounting
1.2K views

Bonds Payable: On January 1, 2014 – ABC issued $800,000.00 of20-year, 11% bonds for...

Finance
1.2K views

Consider a project to supply 100 million postage stamps per year to the USPS for the...

Statistics
1.2K views

Gender Mean S.D. Min Q1 Median Q3 Max Female 23.76 47.47 0 2 5 21 256 Male 14.23 21.16 0 1 5 15 84 Male sample size: 30 Female sample size: 62 Use the following data a) Which measure, the mean or...

Basic Math
1.2K views

During four years of college, Nolan MacGregor's student loans are $4000, $3500, $4400, and $5000 for...

Biology
1.2K views

Removing roots that hold soil in place can cause 1 Point O topsoil to build...

Physics
1.2K views

A solid cylinde inextensible light string and is placed on a rough inclined plane as...

Basic Math
1.2K views

Jim owns a vehicle. Select all of the mutually exclusive events from the following events.Jim's...

Basic Math
1.2K views

In the figures pentagon ABCDE has been dilated to create pentagon LMNOP as shown Answer...

Calculus
1.2K views

Determine all critical points for the function 1 f x x3 3x2 5 A x...

Calculus
1.2K views

6 Let f be the function defined by f x What is the approximation for...

Algebra
1.2K views

26 Determine whether the inequality shown below matches the graph y 2 11 no yes...

Accounting
1.2K views

Bramble Company's net income for 2020 is $54,900. The only potentially...