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Poorya works for a company that has changed its in-house professional development approach for its employees. In 2024, it had a traditional compliance focus, and in 2025, it was more individualized, using AI to support the training. Group A (2024 cohort): Employees trained with traditional compliance-focused Group B (2025 cohort): Employees trained with AI support Poorya compared manager engagement scores between employees trained in 2024 vs. 2025. The employees were only enrolled in one of the training programs. What is the correct null hypothesis for a non-parametric test?

The smallest aldehyde is :

The smallest aldehyde is :

The smallest aldehyde is :

The average neanderthal brain was larger than the average modern human brain.

What can scientists infer from the Laetoli footprints found in Tanzania?

One of the main advantages of the Levallois technique was that

Genetic divergence of human body lice around ~70,000 years ago is consistent with the regular adoption of clothing by modern humans.

The limiting resource for male reproductive success is access to receptive mates. For females, the limiting resource influencing their fitness is access to . I will manually check all fill in the blank questions, do not worry about spelling or letter case.

Archaic Homo sapiens are technically considered the same species as humans today.