Use this information when answering this question:

n = 14

s = 20

H0: σ2 ≤ 500 and Ha: σ2 > 500

The null hypothesis:

a. should be revised

b. should not be rejected

c. should be rejected

d. None of these alternatives is correct.

B. Which type of infectious agent are a tapeworm, a roundworm, and a hookworm?

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