We are interested in testing whether the variance of a population is significantly less than 1.44. The null hypothesis for this test is A) H₀: σ²

Question

We are interested in testing whether the variance of a population is significantly less than 1.44. The null hypothesis for this test is A) H₀: σ² < 1.44. B) H₀: s² ≥ 1.44. C) H₀: σ < 1.20. D) H₀: σ² ≥ 1.44.

Quizplus · Accepted Answer

The null hypothesis states that the variance of the population is not less than or equal to 1.44. Therefore, the correct option is D as it states the null hypothesis as σ ≥ 1.44. Option A is incorrect as it states the alternative hypothesis instead of the null hypothesis. Option B is incorrect as it states the null hypothesis as s ≥ 1.44, which is a sample statistic instead of the population parameter. Option C is incorrect as it states a specific value of σ as the null hypothesis instead of a range of values.

We Are Interested in Testing Whether the Variance of a Population