Author Archives: WEN

Test of Independence Study Material

Let us start the topic by reviewing the concept of independent events. After all, as the name implies, the “test of independence” tests whether two events are independent or not. Independent Events We have previously defined two events A and … Continue reading

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Astrill VPN (Client) App for Android 5+ (Lollipop)

I have found out that after my Smartphone updated to Android 5.0.1, the Astrill VPN app no longer works. It keeps returning an error message that says “No process running.” I wrote an email to Astrill customer support, and they … Continue reading

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Counterintuitive Mac OS X Series 1: How to Completely Delete VPN.

This article show you how to remove VPN connections that you no longer use. Continue reading

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How to delete multiple articles at once at Kindle digital library

For some people, kindle has become more than an option, I use it daily to read articles, especially longer ones. With Amazon-provided “send to Kindle” extension in Chrome browser, sending documents to Kindle devices has become very useful. But Kindle … Continue reading

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