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 we suspect that the variability in concentration 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 = 5.7 grams per liter. Is there sufficient evidence to conclude that the two population variances differ? (a) Test the hypothesis Ho : o = o} vs H1 : 0 # o. Calculate fo = i 0.709 Round your answer to three decimal places (e.g. 98.765). (b) Is there sufficient evidence to conclude that the two population variances differ? Use a = 0.05. no

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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 we suspect that the variability in concentration 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 = 5.7 grams per liter. Is there sufficient evidence to
conclude that the two population variances differ?
(a) Test the hypothesis Ho : 0 = o vs H1 : 0 # 03.
Calculate fo = i
0.709
Round your answer to three decimal places (e.g. 98.765).
(b) Is there sufficient evidence to conclude that the two population variances differ? Use a = 0.05.
no
Statistical Tables and Charts
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 we suspect that the variability in concentration 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 = 5.7 grams per liter. Is there sufficient evidence to conclude that the two population variances differ? (a) Test the hypothesis Ho : 0 = o vs H1 : 0 # 03. Calculate fo = i 0.709 Round your answer to three decimal places (e.g. 98.765). (b) Is there sufficient evidence to conclude that the two population variances differ? Use a = 0.05. no Statistical Tables and Charts
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