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The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally distributed with a standard deviation of 1 foot. Let [tex]$X$[/tex] be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where possible.

a. What is the distribution of [tex]$X$[/tex]? [tex][tex]$X \sim N($[/tex]17, 1$)$[/tex]


Sagot :

Certainly! Let's analyze the given information and interpret the distribution of [tex]\( X \)[/tex].

Given:
- The mean height of an adult giraffe is 17 feet.
- The standard deviation of the height is 1 foot.
- The height [tex]\( X \)[/tex] is normally distributed.

In the notation of normal distribution, [tex]\( X \sim N(\mu, \sigma^2) \)[/tex] where:
- [tex]\( \mu \)[/tex] is the mean of the distribution.
- [tex]\( \sigma \)[/tex] is the standard deviation of the distribution.

From the given data:
- [tex]\( \mu = 17 \)[/tex] (mean height)
- [tex]\( \sigma = 1 \)[/tex] (standard deviation)

So, the height [tex]\( X \)[/tex] of a randomly selected adult giraffe follows a normal distribution with a mean of 17 feet and a standard deviation of 1 foot.

Thus, the distribution of [tex]\( X \)[/tex] is:

[tex]\[ X \sim N(17, 1) \][/tex]

To capture the standard deviation squared ([tex]\(\sigma^2\)[/tex]), the notation could more accurately be stated as [tex]\( X \sim N(17, 1^2) \)[/tex], but since [tex]\( 1^2 = 1 \)[/tex], it simplifies nicely to [tex]\( N(17, 1) \)[/tex].

So, the final answer is:
[tex]\[ X \sim N(17, 1) \][/tex]