Question

identify the type of test, left, right or two - tailed given ( h_1:mult400 ) ( h_0geq400 )
a left
b right
c two - tailed

Explanation:

In hypothesis testing, the alternative hypothesis \(H_1:\mu < 400\) indicates that we are looking at the left - hand tail of the distribution. A left - tailed test is used when the alternative hypothesis has a less - than (\(<\)) sign. A right - tailed test has a greater - than (\(>\)) sign in the alternative hypothesis, and a two - tailed test has a not - equal - to (\(
eq\)) sign.

Answer:

A. Left