Question
What percentage of the area under the normal curve lies.(a) to the left of $\mu ?$(b) between $\mu-\sigma$ and $\mu+\sigma ?$(c) between $\mu-3 \sigma$ and $\mu+3 \sigma ?$
Step 1
The normal distribution is symmetric about its mean, \(\mu\). This means that the area under the curve to the left of \(\mu\) is equal to the area to the right of \(\mu\). Show more…
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