# Question

Let X equal the forced vital capacity (FVC) in liters for a female college student. (The FVC is the amount of air that a student can force out of her lungs.) Assume that the distribution of X is approximately N(μ, σ2). Suppose it is known that μ = 3.4 liters. A volleyball coach claims that the FVC of volleyball players is greater than 3.4. She plans to test her claim with a random sample of size n = 9.

(a) Define the null hypothesis.

(b) Define the alternative (coach’s) hypothesis.

(c) Define the test statistic.

(d) Define a critical region for which α = 0.05. Draw a figure illustrating your critical region.

(e) Calculate the value of the test statistic given that the random sample yielded the following FVCs:

(f) What is your conclusion?

(g) What is the approximate p-value of this test?

(a) Define the null hypothesis.

(b) Define the alternative (coach’s) hypothesis.

(c) Define the test statistic.

(d) Define a critical region for which α = 0.05. Draw a figure illustrating your critical region.

(e) Calculate the value of the test statistic given that the random sample yielded the following FVCs:

(f) What is your conclusion?

(g) What is the approximate p-value of this test?

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