Two chemical companies can supply a raw material. The concentration of a particular

Chapter 10, Problem 10-54

(choose chapter or problem)

Two chemical companies can supply a raw material. The concentration of a particular element in this material is 0.05 2 1 2 1 0.05 s 2 s 2 1.9 2 n2 15 1 2.3 n1 15 s 0.01 2 s 2 2.3 2 n2 8 1 4.5 n1 20 s 0.05 2 s 2 28.8 2 n2 10 1 23.2 n1 5 important. The mean concentration for both suppliers is the same, but we suspect that the variability in concentration may differ between the two companies. The standard deviation of concentration in a random sample of n1 10 batches produced by company 1 is s1 4.7 grams per liter, while for company 2, a random sample of n2 16 batches yields s2 5.8 grams per liter. Is there sufficient evidence to conclude that the two population variances differ? Use 0.05.

Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.

Becoming a subscriber
Or look for another answer

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back