The lower limit of the 90% confidence interval for μ,where n = 64, = 70,and σ = 20,is 65.89.

Question

The lower limit of the 90% confidence interval for μ,where n = 64,  = 70,and σ = 20,is 65.89.

Quizplus · Accepted Answer

Given n = 64, 11ea78b9_2e21_ef5f_8379_53feb8452376_TB4388_11 = 70, and σ = 20, the formula for the lower limit of the 90% confidence interval for μ is:

Lower limit = x̄ - 1.645(σ/√n)

Substituting the given values, we get:

Lower limit = 70 - 1.645(20/√64) = 65.89

Since the given value matches the calculated lower limit, the answer is true.

The Lower Limit of the 90% Confidence Interval for μ,Where