MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 13 blue crabs from Location A contain a mean of 191 milligrams of fish
and a standard deviation of 36 milligrams. The stomach contents of a sample of 10 blue crabs from Location B contain a mean of 186 milligrams of fish and a standard deviation of 45 milligrams. At a = 0.10, can you support the researcher's
claim? Assume the population variances are equal. Complete parts (a) through (d) below.
(a) Identify the null and alternative hypotheses. Choose the correct answer below.
A. Ho: H₁-H₂ ≤0
Hai H1-H2>0
C. Ho: H₁-H₂ 20
Hai H1-H2 <0
(b) Find the standardized test statistic for μ₁ −μ₂.
t= (Round to three decimal places as needed.)
(c) Calculate the P-value.
P= (Round to four decimal places as needed.)
(d) State the conclusion.
Ho. There
enough evidence at the 10% level of significance to support the researcher's claim.
B. Ho: H₁ H₂ = 0
Hai H- Hz #0
O D. Ho: H1-H2<0
Hai H1 - H2 = 0
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Transcribed Image Text:A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 13 blue crabs from Location A contain a mean of 191 milligrams of fish and a standard deviation of 36 milligrams. The stomach contents of a sample of 10 blue crabs from Location B contain a mean of 186 milligrams of fish and a standard deviation of 45 milligrams. At a = 0.10, can you support the researcher's claim? Assume the population variances are equal. Complete parts (a) through (d) below. (a) Identify the null and alternative hypotheses. Choose the correct answer below. A. Ho: H₁-H₂ ≤0 Hai H1-H2>0 C. Ho: H₁-H₂ 20 Hai H1-H2 <0 (b) Find the standardized test statistic for μ₁ −μ₂. t= (Round to three decimal places as needed.) (c) Calculate the P-value. P= (Round to four decimal places as needed.) (d) State the conclusion. Ho. There enough evidence at the 10% level of significance to support the researcher's claim. B. Ho: H₁ H₂ = 0 Hai H- Hz #0 O D. Ho: H1-H2<0 Hai H1 - H2 = 0
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