1. For a random variable X and constants a and c, prove that E[aX+c]=aE[X] + c.
2. Let X be a random variable and
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IP address: 158.108.32.49![{\displaystyle \mu ={\mathrm {E} }[X]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/9d988be241dd4f2aba51e76f922ca04363c2956a)
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Request served via cp5021 cp5021, Varnish XID 458031325
Upstream caches: cp5021 int
Error: 429, Too many requests (f061ab2) at Sat, 28 Feb 2026 16:37:53 GMTSensitive client information
IP address: 158.108.32.49![{\displaystyle {\mathrm {E} }[X-\mu ]=0}](https://wikimedia.org/api/rest_v1/media/math/render/svg/c91fbd56166a5c0ce17edf3e7be8e0cebc377e8c)
1. Let
