Random Samples Were Selected from Three Populations A Compute the Overall Mean

question 81

Essay

Random samples were selected from three populations. The data obtained are shown below. Please note that the sample sizes are not equal.
$\begin{array}{lll}\text { Treatment } 1&\text { Treatment } 2&\text { Treatment } 3\\45 & 31 & 39 \\41 & 34 & 35 \\37 & 35 & 40 \\40 & 40 & \\42 & &\end{array}$
a. Compute the overall mean .
b. At 95% confidence, test to see if there is a significant difference among the means.

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Definitions:

Base-pairing

The hydrogen bonding of adenine to thymine and guanine to cytosine in DNA, crucial for the structure of DNA and accurate DNA replication.

Target Gene

A specific gene that is affected by a particular action or process, such as the binding of a regulatory protein or the action of a drug.

Gene Therapy

Treating a genetic defect or disorder by transferring a normal or modified gene into the affected individual.

SCID-X1

A severe immune system disorder known as X-linked severe combined immunodeficiency, primarily affecting males, where the body is unable to defend itself against bacteria, viruses, and fungi.