A zoologist recorded the weight, in grams, for a sample of white-fronted Amazon parrots. The following MINITAB output presents the results of a hypothesis test regarding the mean weight of this variety of parrot.

a. What are the null and alternate hypotheses?

b. What is the value of the test statistic?

c. What is the P-value?

d. Do you reject H0 at the α = 0.05 level? State a conclusion.

e. Do you reject H0 at the α = 0.01 level? State a conclusion.

f. Use the results of the output to compute the value of the test statistic z for a test of H0: μ = 230 versus H1: μ > 230.
g. Find the P-value.
h. Do you reject the null hypothesis in part

(f) at the α = 0.05 level? State a conclusion.

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Test of mu = 225.0 vs not = 225.0 The assumed standard deviation = 35.0 N Mean SE Mean 50 235.32 4.9497 95% CI (225.619, 245.021) Z P 2.085 0.037