For testing H0 : μ = 120 vs Ha : μ < 120 using the sample...

Question

Question

For testing H₀ : μ = 120 vs H_a : μ < 120 using the sample results x̄ = 116.3, s = 18.4, with

n = 100. Which of the following below is most correct?

(A). There is not enough information to tell.

(B). z = -2.01, p-value = 0.022, Reject Ha

(C) t = -8.63, p-value = 0, Reject H₀

(D). z = -2.01, p-value = 0.022, Reject H₀

(E). t = -2.01, p-value = .024, Reject H₀

math Statistics-And-Probability

Answer 1

Answer #1

We do not know the population standard deviation so we should use t. Hence,

Test statistic

t = -2.01

Hence,

Optio E is correct.

Answer 2

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