feat: add stats/base/ztest/two-sample/results

[gururaj1512]

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Resolves None.

Description

What is the purpose of this pull request?

This pull request:

• feat: add stats/base/ztest/two-sample/results/factory
• feat: add stats/base/ztest/two-sample/results/float32
• feat: add stats/base/ztest/two-sample/results/float64
• feat: add stats/base/ztest/two-sample/results/to-json
• feat: add stats/base/ztest/two-sample/results/to-string

Related Issues

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This pull request:

• resolves None

Questions

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No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

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@stdlib-js/reviewers

[gururaj1512]

As packages were interdependent; Opened single PR for all...

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/ztest/two-sample/results/factory	$\color{green}486/486$ $\color{green}+100.00\%$	$\color{green}31/31$ $\color{green}+100.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{green}486/486$ $\color{green}+100.00\%$
stats/base/ztest/two-sample/results/float32	$\color{green}117/117$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}117/117$ $\color{green}+100.00\%$
stats/base/ztest/two-sample/results/float64	$\color{green}117/117$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}0/0$ $\color{green}+100.00\%$	$\color{green}117/117$ $\color{green}+100.00\%$
stats/base/ztest/two-sample/results/struct-factory	$\color{green}148/148$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}148/148$ $\color{green}+100.00\%$
stats/base/ztest/two-sample/results/to-json	$\color{green}125/125$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}125/125$ $\color{green}+100.00\%$
stats/base/ztest/two-sample/results/to-string	$\color{green}198/198$ $\color{green}+100.00\%$	$\color{green}22/22$ $\color{green}+100.00\%$	$\color{green}1/1$ $\color{green}+100.00\%$	$\color{green}198/198$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.

[gururaj1512]

/stdlib merge

[kgryte]

LGTM after clean-up.

@gururaj1512 In this case, I'd recommend spending a bit more time understanding a two-sample Z-test and how it differs from a one-sample Z-test. With a better understanding prior to opening this PR, some of the copy-paste mistakes could have been avoided.