When the population standard deviations are unknown and are not assumed to be equal,s₁ and s₂ must be used to estimate their respective population standard deviations, $\text { ? }$ ₁ and $\text { ? }$ _2.

Question

Quizplus · Accepted Answer

When the population standard deviations are unknown and are not assumed to be equal, the sample standard deviations s₁ and s₂ must be used to estimate their respective population standard deviations, σ₁ and σ₂. This is because we do not have any other information about the population standard deviations, so we have to rely on the sample standard deviations as estimates.

When the Population Standard Deviations Are Unknown and Are Not ? \text { ? } ?

When the Population Standard Deviations Are Unknown and Are Not $\text { ? }$