Two chemical companies can supply a raw material. The concentration of a particular element in this material is important. The mean concentration for both suppliers is the same, but you suspect that the variability in concentration may differ for 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, and for company 2, a random sample of n₂ = 16 batches yield s₂ = 5.8 grams per liter. Is there sufficient evidence to conclude that the two populations variances differ? Use a = 0.05. a. Because 0.321 < 0.657 <3.77, fail to reject the null hypothesis b. Because 0.265 < 0.657 <3.12, fail to reject the null hypothesis c. Because 0.386 < 0.657 <3.01, fail to reject the null hypothesis d. None among the choices
Two chemical companies can supply a raw material. The concentration of a particular element in this material is important. The mean concentration for both suppliers is the same, but you suspect that the variability in concentration may differ for 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, and for company 2, a random sample of n₂ = 16 batches yield s₂ = 5.8 grams per liter. Is there sufficient evidence to conclude that the two populations variances differ? Use a = 0.05. a. Because 0.321 < 0.657 <3.77, fail to reject the null hypothesis b. Because 0.265 < 0.657 <3.12, fail to reject the null hypothesis c. Because 0.386 < 0.657 <3.01, fail to reject the null hypothesis d. None among the choices
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Question
![Two chemical companies can supply a raw material. The concentration of a particular element in
this material is important. The mean concentration for both suppliers is the same, but you suspect
that the variability in concentration may differ for 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, and for company 2, a random sample of n₂ = 16 batches yield s₂ = 5.8 grams per liter.
Is there sufficient evidence to conclude that the two populations variances differ? Use a = 0.05.
a. Because 0.321 < 0.657 <3.77, fail to reject the null hypothesis
b. Because 0.265 < 0.657 <3.12, fail to reject the null hypothesis
c. Because 0.386 < 0.657 <3.01, fail to reject the null hypothesis
d. None among the choices](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9565b2cd-afee-4e6e-a670-ca0a4d68a965%2Fedb934bc-8c1f-40a4-8cfd-2ea936e6bd5b%2F219q3zk_processed.png&w=3840&q=75)
Transcribed Image Text:Two chemical companies can supply a raw material. The concentration of a particular element in
this material is important. The mean concentration for both suppliers is the same, but you suspect
that the variability in concentration may differ for 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, and for company 2, a random sample of n₂ = 16 batches yield s₂ = 5.8 grams per liter.
Is there sufficient evidence to conclude that the two populations variances differ? Use a = 0.05.
a. Because 0.321 < 0.657 <3.77, fail to reject the null hypothesis
b. Because 0.265 < 0.657 <3.12, fail to reject the null hypothesis
c. Because 0.386 < 0.657 <3.01, fail to reject the null hypothesis
d. None among the choices
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