Question

Two samples were taken from a given population, with the following statistics: x b a r...

Two samples were taken from a given population, with the following statistics:

x b a r 1 = 476.88   s 1 = 42.11   n 1 = 19

x b a r 2 = 318.32   s 2 = 26.80   n 2 = 22

The 99% confidence interval for the difference  μ 1 − μ 2 is

Group of answer choices

(127.65, 189.42)

(127.67, 189.45)

(126.55, 188.46)

(126.55, 188.43)

Math   Statistics-And-Probability   
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