Children Narrative Two Random Samples of 3-Year-Old Children, Each of Size 25

question 83

Short Answer

Children Narrative
Two random samples of 3-year-old children, each of size 25, are taken from independent populations. The populations are distributed with equal variances. The first sample has a mean of 35.5 and a standard deviation of 3.0 while the second sample has a mean 33.0 and standard deviation of 4.0. A test for the difference between the two population means is conducted on this data.
-Refer to Children Narrative. What is the pooled variance?

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Definitions:

Nitrogen

A colorless, odorless, tasteless gas that constitutes about 78% of the Earth's atmosphere; it is a critical element in the makeup of amino acids, proteins, and nucleic acids.

Ionic Compound

A substance made up of positively and negatively charged ions that are combined in a ratio to neutralize the charges.

Bromine

A reddish-brown liquid at room temperature, with the elemental symbol Br, and atomic number 35; it is a halogen and is used in various industrial applications.

Magnesium

A lightweight, silver-white metallic element, crucial for cellular metabolism and found in chlorophyll, often used in alloys and as a dietary supplement.