QuestionAugust 27, 2025

Use the critical value t^ast =2.045 and alpha =0.05 to find the following probability. P(tlt -2.045)=[?]

Use the critical value t^ast =2.045 and alpha =0.05 to find the following probability. P(tlt -2.045)=[?]
Use the critical value t^ast =2.045
and alpha =0.05 to find the
following probability.
P(tlt -2.045)=[?]

Solution
4.4(182 votes)

Answer

P(t < -2.045) = 0.025 Explanation 1. Identify the distribution The problem involves a t-distribution with a critical value and significance level \alpha = 0.05. 2. Determine the tail probability Since P(t < -2.045) is asked, and given that t^{\ast} = 2.045 corresponds to a two-tailed test with \alpha = 0.05, each tail has \frac{\alpha}{2} = 0.025 probability.

Explanation

1. Identify the distribution<br /> The problem involves a $t$-distribution with a critical value and significance level $\alpha = 0.05$.<br /><br />2. Determine the tail probability<br /> Since $P(t < -2.045)$ is asked, and given that $t^{\ast} = 2.045$ corresponds to a two-tailed test with $\alpha = 0.05$, each tail has $\frac{\alpha}{2} = 0.025$ probability.
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