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NO LINKS!! Please help me with this probability question Part 3j​

NO LINKS!! Please help me with this probability question Part 3j​-example-1
User CyberGuy
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1 Answer

5 votes

Answer:

b) 64 to 76 inches.

Explanation:

In a normal distribution, 95% of the population is within 2 standard deviations of the mean.

Given values:


  • \textsf{Mean}\; \mu=70\; \sf inches

  • \textsf{Standard deviation}\; \sigma=3\; \sf inches

Given that the mean height is 70 inches and the standard deviation is 3 inches:


\implies \mu -2 \sigma = 70-2(3)=64


\implies \mu+2 \sigma = 70+2(3)=76

Therefore, an appropriate height range for 95% of all people in the sample would be:

  • 64 to 76 inches.
User Dmitry Bosikov
by
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